Answer: 3-1/3.
1. Convert the second fraction into a reciprocal. 3/7 turns in 7/3.
2. Multiply the fractions; multiply the denominator with the denominator and the numerator with the numerator. 3/7 x 7/3 = 70/21.
3. Simplify the result; divide both the numerator and denominator by 7 (their common multiple). 70/7 = 10, and 21/7 = 3. So, now you have 10/3.
4. Convert the reciprocal fraction. 10/3 = 3-1/3.