519/20
Four fifths divided by one tenth is 8
4
Four fifths of 20 dollars = 16 dollars.
negative one and two fifths
it is 20 21s
4/5 divided by 3/5 = 4/3
Nine and two thirds divided by four and five fifths = 114/15
Four fifths times 5 is 20 fifths which is equal to 4.
10
6.25
0.16