The easiest way to figure this out is by multiplying improper fractions. So, the first step will be turning both into improper fractions:
2 3/4 = 11/4
4 = 4/1
Then, multiply the numerators and denominators.
11 x 4 = 44
1 x 4 = 4
This gives you 44/4. Lastly, simplify your fraction with basic division. You're answer should be 11.
