First, I'm going to explain the steps to finding a mixed number, then I will solve your problem :)
Step One - Find out how many times the denominator goes into the numerator nicely, without any decimal points.
Step Two - Subtract your answer from step one from the numerator and that will be your left over fraction.
\(\frac{22}{7}\)
\(7*3=21\)
Since you multiply 7 by 3, 3 will be our whole number out in front of the fraction.
\(22-21=1\)
\(3 \frac{1}{7}\)