Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,373/899,999,999,997
- The integer number above the bar is called numerator: 779,422,863,373
- The integer number below the bar is called denominator: 899,999,999,997
- 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 = 779,422,863,373 ÷ 899,999,999,997
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:
779,422,863,373 = 7 × 11 × 19 × 7,013 × 75,967
779,422,863,373 is a composite number.
899,999,999,997 = 3 × 7 × 683 × 953 × 65,843
899,999,999,997 is a composite number.
779,422,863,373/899,999,999,997 =
(779,422,863,373 ÷ 7) / (899,999,999,997 ÷ 7) =
111,346,123,339/128,571,428,571
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.
779,422,863,373/899,999,999,997 =
(7 × 11 × 19 × 7,013 × 75,967)/(3 × 7 × 683 × 953 × 65,843) =
((7 × 11 × 19 × 7,013 × 75,967) ÷ 7) / ((3 × 7 × 683 × 953 × 65,843) ÷ 7) =
(11 × 19 × 7,013 × 75,967)/(3 × 683 × 953 × 65,843) =
111,346,123,339/128,571,428,571
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
111,346,123,339/128,571,428,571 =
111,346,123,339 ÷ 128,571,428,571 =
0.866025403751 ≈
0.87