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The GG Network blog — page 9

Free lessons that leave you a little sharper every visit — plus deep guides to the professional tools. Knowledge shouldn't sit behind a paywall.

All postsMoney & Finance (58)Home & Renting (7)Work & Business (39)Security & Privacy (24)Law & Life Admin (13)Everyday Maths (92)Health & Fitness Numbers (27)Building for the Web (24)Dates & Time (8)Benefits & Support (4)Data & Spreadsheets (22)Care & Communication (10)Bereavement & Preparedness (5)Home, Pets & Family (22)Shared Living & Splitting Up Costs (5)The Tools (36)
Overtime pay: what time-and-a-half actually adds up to
2026-08-26 · 2 min read

Gross = rate × regular hours + rate × multiplier × overtime hours — one formula, but the multiplier alone can swing a week's pay by real money. Two worked weeks, with the arithmetic shown.

overtimehourly-paysalarypersonal-finance
Unit price: how to actually find the better deal
2026-08-26 · 2 min read

The bigger package isn't automatically the better price — dividing price by quantity is the only way to know for sure. Three worked comparisons, including one where the "value" size loses.

unit-priceshoppingpersonal-financepercentages
Net worth: the one number that actually tracks progress
2026-08-25 · 2 min read

Assets minus liabilities — one subtraction — but it's the only number that tells you whether you're actually getting ahead. Two starting snapshots and a year-later check-in, all with real arithmetic.

net-worthpersonal-financesavingsplanning
ROI: why percent return beats dollar profit
2026-08-25 · 2 min read

The bigger dollar profit isn't always the better deal — return on investment puts two different-sized bets on the same footing. The formula, a side-by-side comparison, and what a loss looks like in the same math.

roiinvestingpersonal-financefinance
APR vs. APY: what compounding actually costs you
2026-08-24 · 2 min read

The same stated rate produces a different real number depending on how often it compounds. Here's the formula, two worked examples — a savings account and a credit card — and why the gap matters more than the sticker rate.

financeinterestaprapypersonal-finance
Emergency fund: how many months you actually need
2026-08-24 · 2 min read

The target is one multiplication — essential monthly expenses times months of cushion — but the months figure is where the real decision lives. Here's the formula and two worked examples showing how much that choice moves the target.

savingsemergency-fundbudgetingpersonal-finance
Simple interest: the flat-rate math behind short loans
2026-08-23 · 2 min read

Not every loan compounds. Here's the formula behind flat-rate interest, a real worked example, and exactly how many dollars compounding would have added to the same loan.

financeinterestloanspersonal-financemath
How much rent can you actually afford? The 30% rule
2026-08-23 · 2 min read

One guideline decides the rent ceiling most apartment hunts start from: no more than 30% of gross income. Here's the formula, a real example, and why it doesn't know about your other debts.

renthousingbudgetingpersonal-finance
Debt-to-income ratio: what lenders actually see
2026-08-23 · 2 min read

One ratio decides whether a mortgage application clears the first hurdle, often before your credit score gets a look. Here's the formula, the bands lenders use, and how a single new car payment can flip “Good” to “Caution”.

debtmortgagedtilendingpersonal-finance
What unpaid overtime really costs your hourly rate
2026-08-23 · 2 min read

A salary quotes one number a year, but the hourly rate behind it depends entirely on how many hours you actually work — and for exempt employees, extra hours are a hidden pay cut, not overtime pay. Here's the math, and how to compare two offers fairly.

salaryhourly-wageovertimepayjobs
Mortgage PITI: the four pieces of your real payment
2026-08-16 · 2 min read

A rate quote leads with principal and interest, but the number that actually leaves your account every month has two more pieces bolted on. Here's the formula, a real example, and what a smaller down payment costs you.

mortgagehousingreal-estatefinance
How long a credit card balance actually takes to pay off
2026-08-16 · 2 min read

A fixed $150 a month sounds like progress until you run it against a 22% APR. Here's the payoff math, a real example, and why doubling the payment does more than double the speed.

debtcredit-cardspersonal-financeinterest
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