Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,363/899,999,999,986
- The integer number above the bar is called numerator: 779,422,863,363
- The integer number below the bar is called denominator: 899,999,999,986
- 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 = 779,422,863,363 ÷ 899,999,999,986
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:
779,422,863,363 = 3 × 23 × 11,295,983,527
779,422,863,363 is a composite number.
899,999,999,986 = 2 × 23 × 1,613 × 12,129,707
899,999,999,986 is a composite number.
779,422,863,363/899,999,999,986 =
(779,422,863,363 ÷ 23) / (899,999,999,986 ÷ 23) =
33,887,950,581/39,130,434,782
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.
779,422,863,363/899,999,999,986 =
(3 × 23 × 11,295,983,527)/(2 × 23 × 1,613 × 12,129,707) =
((3 × 23 × 11,295,983,527) ÷ 23) / ((2 × 23 × 1,613 × 12,129,707) ÷ 23) =
(3 × 11,295,983,527)/(2 × 1,613 × 12,129,707) =
33,887,950,581/39,130,434,782
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
33,887,950,581/39,130,434,782 =
33,887,950,581 ÷ 39,130,434,782 =
0.86602540375 ≈
0.87