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Multiply 21/80 with 30/45

This multiplication involving fractions can also be rephrased as "What is 21/80 of 30/45?"

21/80 × 30/45 is 7/40.

Steps for multiplying fractions

  1. Simply multiply the numerators and denominators separately:
  2. 21/80 × 30/45 = 21 × 30/80 × 45 = 630/3600
  3. After reducing the fraction, the answer is 7/40

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