Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,309/900,000,000,057
- The integer number above the bar is called numerator: 779,422,863,309
- The integer number below the bar is called denominator: 900,000,000,057
- 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 = 779,422,863,309 ÷ 900,000,000,057
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:
779,422,863,309 = 3 × 207,629 × 1,251,307
779,422,863,309 is a composite number.
900,000,000,057 = 3 × 521 × 821 × 701,359
900,000,000,057 is a composite number.
779,422,863,309/900,000,000,057 =
(779,422,863,309 ÷ 3) / (900,000,000,057 ÷ 3) =
259,807,621,103/300,000,000,019
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.
779,422,863,309/900,000,000,057 =
(3 × 207,629 × 1,251,307)/(3 × 521 × 821 × 701,359) =
((3 × 207,629 × 1,251,307) ÷ 3) / ((3 × 521 × 821 × 701,359) ÷ 3) =
(207,629 × 1,251,307)/(521 × 821 × 701,359) =
259,807,621,103/300,000,000,019
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
259,807,621,103/300,000,000,019 =
259,807,621,103 ÷ 300,000,000,019 =
0.866025403622 ≈
0.87