Examples · Money
Money, on a board
Not just a total, but which number is doing the work.
A price, a cost and a percentage are easy to mix up when they only exist as one answer on a calculator. CalcAnyway keeps each one on its own card, wired together, so changing one number moves every result that depends on it.
Most of the money examples are written for Japan, where the costs and the rules are Japanese, and they are in Japanese only: お金の活用例（日本語）. The ones here work the same anywhere.
Articles
Splitting a bill — rounding, weights and who paid, for everyone at once
87,000 yen among 24 people is 3,625 yen each. Round up to 100 yen and collect 3,700: that gathers 88,800 and leaves 1,800. Boards also show weighted shares and each person's balance when someone paid up front (the balances add up to 0).
Electricity cost — the amount from power and running time
Energy (kWh) and cost from power (W) and running time. In this example, a 1,000 W hair dryer for 10 minutes is about 0.1667 kWh, about $0.033 at an assumed $0.20 per kWh; a second board lines up three appliances.
Compound interest — the future value from an annual rate and a number of years
The future value from the principal, the rate and the years. In this example, 100 at 5% for 10 years is about 162.89, not the 150 from adding 5 a year.
Compound annual growth rate (CAGR) — the yearly rate from a start value and an end value
The steady yearly rate from a start value, an end value and the years. In this example, 100 to 150 in five years is about 8.45%, not 10%.
Margin and markup — how they differ and how to calculate each
Margin is gross profit ÷ price, markup is gross profit ÷ cost. Here cost 80 and price 100 give 20% and 25%; a 20% target gives prices of 100 and 96.