Back in the 2000s I used to have an app on my PC where I could enter my salary or hourly wage, hit a button when I went for a poop, hit it again when I got back and it would tell me how much I'd earned on the can.
Wonder if there's anything like that for phones these days?
If you want to set up a spreadsheet, the formulas are pretty simple:
Salary / 52 = weekly pay (approx, there's a few extra days in the year but my bi-weekly pay is salary / 26, which actually works out to a slightly higher pay than if they did it by extact days)
Weekly pay / 40 = hourly equivalent (or 37.5 if you want to assume unpaid lunches, which effectively increases your hourly rate)
Hourly equivalent / 60 = minute equivalent
Time in minutes pooping * hourly equivalent = money earned pooping
For hourly pay, just drop that in to the hourly equivalent variable above.