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Multiply 81/21 with 4/45

1st number: 3 18/21, 2nd number: 4/45

This multiplication involving fractions can also be rephrased as "What is 81/21 of 4/45?"

81/21 × 4/45 is 12/35.

Steps for multiplying fractions

  1. Simply multiply the numerators and denominators separately:
  2. 81/21 × 4/45 = 81 × 4/21 × 45 = 324/945
  3. After reducing the fraction, the answer is 12/35

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