8 1/3 * 4 1/5

Let's convert each mixed number to an improper fraction ....   we have....

25/3 * 21/5       and we can "cross-cancel" the 25 and 5  and the 21 and 3 giving

5 * 7 = 35    

Hint: It always makes the work of multiplying fractions easier if we can "cancel" before we multiply!!