21/4 divided by 108/4

21/4 ÷ 108/4
=
7 36
Decimal: 0.194444
Percentage: 19.44%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    108/4 becomes 4/108
  2. 2
    Multiply by reciprocal
    21/4 × 4/108
  3. 3
    Multiply numerators & denominators
    21 × 4 = 84    4 × 108 = 432
  4. 4
    Simplify
    84/432 = 7/36

How to Divide Fractions

To divide fractions, use "Keep, Change, Flip": keep the first fraction unchanged, change the ÷ to ×, then flip the second fraction. Multiply and simplify.

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