Step 1 - Find Whole Number 
Calculate out how many times the denominator goes into the numerator. To do that, divide 186 by 17 and keep only what is to the left of the decimal point: 
 
 186 / 17 = 10.9412 = 10 
 
Step 2 - Find New Numerator 
Multiply the answer from Step 1 by the denominator and deduct that from the original numerator. 
 
 186 - (17 x 10) = 16 
 
Step 3 - Get Solution 
Keep the original denominator and use the answers from Step 1 and Step 2 to get the answer. 186/17 as a mixed number is: 
 
10 16/17