Turn 4 1/6 into an improper fraction.
There are 4 x 6 parts in the whole number 4, add 1/6 to that to get = 25/6
now we have: 25/6 divided by 1/5
The rule for dividing is skip the first number, flip the second number, and multiply instead of divide.
So now we have: 25/6 x 6/1 = (25*6)/(6*1) = ?
You must get the final answer yourself. ;-)