Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,402/899,999,999,973
- The integer number above the bar is called numerator: 779,422,863,402
- The integer number below the bar is called denominator: 899,999,999,973
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 779,422,863,402 ÷ 899,999,999,973
To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
Written with exponents:
779,422,863,402 = 2 × 3 × 3 × 1,667 × 4,273 × 6,079 = 2 × 32 × 1,667 × 4,273 × 6,079
779,422,863,402 is a composite number.
Written with exponents:
899,999,999,973 = 3 × 3 × 17 × 5,882,352,941 = 32 × 17 × 5,882,352,941
899,999,999,973 is a composite number.
779,422,863,402/899,999,999,973 =
(779,422,863,402 ÷ 9) / (899,999,999,973 ÷ 9) =
86,602,540,378/99,999,999,997
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
779,422,863,402/899,999,999,973 =
(2 × 32 × 1,667 × 4,273 × 6,079)/(32 × 17 × 5,882,352,941) =
((2 × 32 × 1,667 × 4,273 × 6,079) ÷ 32) / ((32 × 17 × 5,882,352,941) ÷ 32) =
(2 × 1,667 × 4,273 × 6,079)/(17 × 5,882,352,941) =
86,602,540,378/99,999,999,997
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
86,602,540,378/99,999,999,997 =
86,602,540,378 ÷ 99,999,999,997 =
0.866025403806 ≈
0.87