81/2 divided by 64/4

81/2 ÷ 64/4
=
81 32
Mixed Number: 2 17/32
Decimal: 2.53125
Percentage: 253.13%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    64/4 becomes 4/64
  2. 2
    Multiply by reciprocal
    81/2 × 4/64
  3. 3
    Multiply numerators & denominators
    81 × 4 = 324    2 × 64 = 128
  4. 4
    Simplify
    324/128 = 81/32

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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