Simplify the fraction by the simplification number.
Step 1: Calculate the numerator
To calculate the new numerator, divide the numerator of the fraction (147) by the simplification number (21):
Numerator = 147 ÷ 21 = 7
Step 2: Calculate the denominator
To calculate the new denominator, divide the denominator of the fraction (441) by the simplification number (21):
Denominator = 441 ÷ 21 = 21