Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,387/900,000,000,025
- The integer number above the bar is called numerator: 779,422,863,387
- The integer number below the bar is called denominator: 900,000,000,025
- 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 = 779,422,863,387 ÷ 900,000,000,025
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:
779,422,863,387 = 3 × 7 × 142,057 × 261,271
779,422,863,387 is a composite number.
Written with exponents:
900,000,000,025 = 5 × 5 × 7 × 37 × 4,481 × 31,019 = 52 × 7 × 37 × 4,481 × 31,019
900,000,000,025 is a composite number.
779,422,863,387/900,000,000,025 =
(779,422,863,387 ÷ 7) / (900,000,000,025 ÷ 7) =
111,346,123,341/128,571,428,575
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.
779,422,863,387/900,000,000,025 =
(3 × 7 × 142,057 × 261,271)/(52 × 7 × 37 × 4,481 × 31,019) =
((3 × 7 × 142,057 × 261,271) ÷ 7) / ((52 × 7 × 37 × 4,481 × 31,019) ÷ 7) =
(3 × 142,057 × 261,271)/(52 × 37 × 4,481 × 31,019) =
111,346,123,341/128,571,428,575
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
111,346,123,341/128,571,428,575 =
111,346,123,341 ÷ 128,571,428,575 =
0.866025403739 ≈
0.87