Expand the fraction by the expansion number.

**Step 1: Calculate the numerator**

To calculate the new *numerator*, multiply the numerator of the fraction (3) by the expansion number (5):

Numerator = 3 × 5 = 15

**Step 2: Calculate the denominator**

To calculate the new *denominator*, multiply the denominator of the fraction (5) by the expansion number (5):

Denominator = 5 × 5 = 25