Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,345/899,999,999,994
- The integer number above the bar is called numerator: 779,422,863,345
- The integer number below the bar is called denominator: 899,999,999,994
- 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 = 779,422,863,345 ÷ 899,999,999,994
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:
779,422,863,345 = 3 × 5 × 7 × 7,423,074,889
779,422,863,345 is a composite number.
899,999,999,994 = 2 × 3 × 43 × 241 × 643 × 22,511
899,999,999,994 is a composite number.
779,422,863,345/899,999,999,994 =
(779,422,863,345 ÷ 3) / (899,999,999,994 ÷ 3) =
259,807,621,115/299,999,999,998
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.
779,422,863,345/899,999,999,994 =
(3 × 5 × 7 × 7,423,074,889)/(2 × 3 × 43 × 241 × 643 × 22,511) =
((3 × 5 × 7 × 7,423,074,889) ÷ 3) / ((2 × 3 × 43 × 241 × 643 × 22,511) ÷ 3) =
(5 × 7 × 7,423,074,889)/(2 × 43 × 241 × 643 × 22,511) =
259,807,621,115/299,999,999,998
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
259,807,621,115/299,999,999,998 =
259,807,621,115 ÷ 299,999,999,998 =
0.866025403722 ≈
0.87