You have the following mixed number:
11 1/6
In order to turn the previous mixed number in a decimal, consider that the previous number is equal to:
11 1/6 = 11 + 1/6
find the decimal number of 1/6 and then you sum such a decimal to integer number 11.
1/6 = 0.166...
THen, you obtain:
11 + 0.166.. = 11.166...
Hence, te decimal number is 11.166...