Hey there!
First we multiply 3 1/4 x 1 1/2:
3 1/4 = 13/4 and 1 1/2 = 3/2
13 X 3 = 39
4 x 2 = 8
39/8 in simplest form = 4 7/8
Next, multiply 4 7/8 x 9:
4 7/8 = 39/8 and 9 = 9/1 (since it is one whole)
39 x 9 = 351
8 x 1 = 8
351/8 in simplest form is 43 7/8.
Your final answer is 43 7/8.
Hope this helps you.
Have a great day!