It's division.
Hope I helped!
8 21/100 is the mixed number for8.21
40%less
You take 36/60
That equals 60%
This means that 36 is 60% of 60
So in 24 is 40% of 60 or 36 is 40% less than 60
You would probably have to measure it greatest distance by ur least distance and subtract or add
