Multiplication of Fractions

1. What is 4/7 of 49?
2. What is 11/12 of 72?
3. 8 x 7/11 x 22/56 = n
4. What is 5/8 of 4/15?
5. What is 9 times five eighths times 16/45?
6. 15/17 x 51/30=n
7. What is 13/39 times 1/3?
8. What is 26/27 of 54?
9. 3 x 4/21 x 14/16 = n
10. 12 x 5/36 x 9/45 = n