2.15 = 65438+215 = 43 in 20.

2.4 = 65438+24 in 00 = 65438 in 5+02

1.2= 10 part 12 = 6/5 part.

1.25= 100 part 125 = 5/4.

3. 19 = 3 19 100

1.8 =/part of kloc-0/0/part of kloc-0/8 = 5.

1.4 =/part of kloc-0/0/part of kloc-0/4 = 5.

10.6= 10 part 106 = 53 part 5.