Simplify the fraction by the simplification number.

**Step 1: Calculate the numerator**

To calculate the new *numerator*, divide the numerator of the fraction (75) by the simplification number (25):

Numerator = 75 ÷ 25 = 3

**Step 2: Calculate the denominator**

To calculate the new *denominator*, divide the denominator of the fraction (125) by the simplification number (25):

Denominator = 125 ÷ 25 = 5