66.6667
6/400 = 0.015
You seem to be unaware of the fact that you could have obtained the answer much more easily and quickly by using the calculator that comes as part of your computer.
400 divided by 6 is 66.6667.
66.6667
400/6=66,66
66.6667
400 divided by 6 equals 66 with a remainder of 4.
360
0.05
0.0143
66.6667
7
41
85.25
1,600 divided by 4 = 400