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Multiply 3/21 with 45/80

This multiplication involving fractions can also be rephrased as "What is 3/21 of 45/80?"

3/21 × 45/80 is 9/112.

Steps for multiplying fractions

  1. Simply multiply the numerators and denominators separately:
  2. 3/21 × 45/80 = 3 × 45/21 × 80 = 135/1680
  3. After reducing the fraction, the answer is 9/112

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