do you mean (11/8) ÷ 3, or 11/(8 ÷ 3)?
The first one is 11/24, the second one is 33/8.
I'm not sure about the term compatible numbers.
535.6 divided by 35 using compatible numbers = 15.302857142857144
:(
2025.25
84.9523
6.9877
2
6.6184
0.011
1.125
2025.25
The best way to estimate a quotient using compatible numbers is to first understand how compatible numbers work. They are numbers that are close in value to the actual numbers and are easily added, subtracted or divided.
23.3043