40/4 times 21/5

40/4 × 21/5
=
42
Decimal: 42
Percentage: 4200%

Step-by-Step Solution

  1. 1
    Multiply numerators
    40 × 21 = 840
  2. 2
    Multiply denominators
    4 × 5 = 20
  3. 3
    Write result
    840/20
  4. 4
    Simplify
    840/20 = 42/1

How to Multiply Fractions

Multiplying fractions is straightforward — multiply the numerators together and the denominators together. No common denominator needed! Just simplify the result.

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