Work is shown in the picture below. I split the work of solving the numerator and denominator apart so it's easier to understand.
The most confusing part may be solving the . However, it's basically asking you to divide 2 by . Remember that in order to divide something in fraction form, you the "flip" the numerator and denominator of the divisor, meaning the numerator now becomes the denominator and the denominator now becomes the numerator. This results in · part - notice how the was flipped to .
Answer is $22.37: You subtract $56.75 from $87.37,which equals $30.62, then you add the 2 checks that the bank didn't return and subtract that amount from the $30.62.