The answer is 84 7/12
You would convert the mixed fractions to improper fractions then multiply the numerators and denominators. Then you convert your answer back into a mixed fraction.
7 1/4 is equal to 29/4
11 2/3 is equal to 35/3
29/4 • 35/3
So 29 • 35 = 1015 and 4 • 3 = 12
Now you have the improper fraction 1015/12, which is 84 7/12 as a mixed fraction in its simplest form.
Hoped this helped!