If we type 7500/22781.13 into a calculator we obtain
This can be rounded in any number of ways, depending on what precision you want. Rounding to two decimals, for instance, produced 0.33. Rounding to 3 deci produces 0.329. I cant fully answer your question, you need to be more specific!
The rule is that, if the number after the desired precision is equal to or greater than five, you round up. Otherwise you round down.
Have a good one!