3 1/2 x 2 1/4=???

like I pointed out in the last post, first change all to usable fractions

3 1/2 x 2 1/4
= 7/2 x 9/4
= 63/8

or change them to decimals
3 1/2 x 2 1/4
= 3.5 x 2.25
= 7.875

of course 63/8 = 7.875