把下面的小数化成分数、分数化成小数：3.6=,2.8=,0.15=,0.39=,6.6=,6.6=,5.375=4分之3

3.6 = 36/10 = 18/5
2.8 = 28/10 = 14/5
0.15 = 15/100 = 3/20
0.39 = 39/100
6.6 = 66/10 = 33/5
5.375 = 5375/1000 = 1075/200 = 215/43
3/4 = 0.75
1/8 = 0.125
6/40 = 3/20 = 0.15