What’s the steps you take to simplify fractions..? (Ik it’s such a stupid question but I still don’t get the whole fraction thing)

1. Write down the factors for the numerator and the denominator.
2. Determine the largest factor that is common between the two.
3. Divide the numerator and denominator by the greatest common factor.
4. Write down the reduced fraction.

A= r2 × 3.14 7x7 ↓ ↓ 49 × 3.14 = 153.86 → 153.9