Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,428/900,000,000,042
- The integer number above the bar is called numerator: 779,422,863,428
- The integer number below the bar is called denominator: 900,000,000,042
- 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 = 779,422,863,428 ÷ 900,000,000,042
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:
779,422,863,428 = 2 × 2 × 11 × 11 × 1,610,377,817 = 22 × 112 × 1,610,377,817
779,422,863,428 is a composite number.
900,000,000,042 = 2 × 3 × 11 × 13 × 137 × 7,656,577
900,000,000,042 is a composite number.
779,422,863,428/900,000,000,042 =
(779,422,863,428 ÷ 22) / (900,000,000,042 ÷ 22) =
35,428,311,974/40,909,090,911
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.
779,422,863,428/900,000,000,042 =
(22 × 112 × 1,610,377,817)/(2 × 3 × 11 × 13 × 137 × 7,656,577) =
((22 × 112 × 1,610,377,817) ÷ (2 × 11)) / ((2 × 3 × 11 × 13 × 137 × 7,656,577) ÷ (2 × 11)) =
(2 × 11 × 1,610,377,817)/(3 × 13 × 137 × 7,656,577) =
35,428,311,974/40,909,090,911
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
35,428,311,974/40,909,090,911 =
35,428,311,974 ÷ 40,909,090,911 =
0.866025403768 ≈
0.87