First off we change the mixed numbers into an improper fraction.
This is how we do it
denominator x whole number + numerator.
9 x 3 + 5 = 32/9
8 x 1 + 7 = 15/8
Now we can multiply.
15 x 32 = 480
8 x 7 = 56
480/56
Since this is an improper fraction we have to change it to a mixed number
This is how we do it
numerator ÷ denominator
480 ÷ 56 = 8 32/56
8 32/56 simplified = 8 4/7
The answer is 8 4/7
I hope this helps!