#### Answer

42

#### Work Step by Step

First, convert the mixed number into an improper fraction. So 5 1/4 would turn into 21/4. Now since this is multiplication no common denominator needs to be found. Now multiply 21/4 with 8/1. Multiply numerator with numerator and denominator with denominator, and you should get 168/4, which can be reduced/rewritten as 42.