Step 1 :Step 1: Understand the meaning of the topic
Step 2 :Step 2: Logic of thinking back and forth
Step 3 :Step 3: Calculation steps
Step 4 :- Mixed Number: $3+\frac{72}{100}$
Step 5 :- Expanded Form: $3+\frac{70}{100}+\frac{2}{100}$
Step 6 :- $=3+\frac{\square}{100}+\frac{\square}{100} \times 1+\frac{\square}{100}$
Step 7 :- Decimal: $3.72$
Step 8 :Step 4: Simplify the final result
Step 9 :Step 5: Check the result