Let's convert 523 to an improper fraction as follows,
Step 1: Multiply the denominator "3"(the bottom number in the fraction) and the whole number "5"
5×3=15
Step 2: Add the answer from Step 1 to the numerator "1"(the top number in the fraction)
15+2=17
Step 3: Write answer from Step 2 over the denominator "3"
173