With all shown on here and show work

To multiply decimals pretend there is no decimal for example
.165*74 = 12210; then however many digits (not counting zeros) is after the decimal added together (from both numbers) so 3 so 12.21 is the answer

1)2 divided by 5 is .4
2)1 divided by 6 is .16
3)3 divided by 8 is .38
4)And the last is 5.5
5).25 is 1/4
I don’t know about the rest lol
9)12.6
10)304.069
A)325.74
12)1.29
13)115.84
14)13.13
15)4.5396
16)12.21
17)0.01503