Why the saved calculation matters more than the calculator
Anyone can divide two numbers. The value is that the result is stored together with the figures it was based on, so six months later you can see what you assumed rather than argue about it.
At a glance
- Inputs
- Hours saved, hourly cost, one-off effort, running cost
- Stored with the result
- The inputs as they were on the day, so the number stays checkable
- Money
- Held as exact decimals, never as floating point