The mixed number 57 31/8 written as an improper fraction is 487/8
To turn the mixed number 57 31/8 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 57 × 8 = 456.
After that, add the result to the numerator of the fractional part: 456 + 31 = 487.
Next, Write the sum of the previous step on the original denominator: 487/8.
This means that 57 31/8, as an improper fraction, equals 487/8.
See also: 57 31/8 as a decimal