Answer: 8.75
Explanation:
3 1/8 into a decimal is 3.125
3 1/2 into a decimal in 3.5 or 3.50
4/5 into a decimal is 0.8 or .8
Then just multiply 3.125 and 3.5 and you get 10.9375
Next, multiply 10.9375 by 0.8 and you get 8.75
Therefore your answer is 8.75