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Multiply 81/21 with 20/90

1st number: 3 18/21, 2nd number: 20/90

This multiplication involving fractions can also be rephrased as "What is 81/21 of 20/90?"

81/21 × 20/90 is 6/7.

Steps for multiplying fractions

  1. Simply multiply the numerators and denominators separately:
  2. 81/21 × 20/90 = 81 × 20/21 × 90 = 1620/1890
  3. After reducing the fraction, the answer is 6/7

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