Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,380/900,000,000,011
- The integer number above the bar is called numerator: 779,422,863,380
- The integer number below the bar is called denominator: 900,000,000,011
- 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 = 779,422,863,380 ÷ 900,000,000,011
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:
779,422,863,380 = 2 × 2 × 5 × 7 × 4,049 × 1,374,983 = 22 × 5 × 7 × 4,049 × 1,374,983
779,422,863,380 is a composite number.
Written with exponents:
900,000,000,011 = 7 × 7 × 29 × 7,817 × 81,023 = 72 × 29 × 7,817 × 81,023
900,000,000,011 is a composite number.
779,422,863,380/900,000,000,011 =
(779,422,863,380 ÷ 7) / (900,000,000,011 ÷ 7) =
111,346,123,340/128,571,428,573
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.
779,422,863,380/900,000,000,011 =
(22 × 5 × 7 × 4,049 × 1,374,983)/(72 × 29 × 7,817 × 81,023) =
((22 × 5 × 7 × 4,049 × 1,374,983) ÷ 7) / ((72 × 29 × 7,817 × 81,023) ÷ 7) =
(22 × 5 × 4,049 × 1,374,983)/(7 × 29 × 7,817 × 81,023) =
111,346,123,340/128,571,428,573
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
111,346,123,340/128,571,428,573 =
111,346,123,340 ÷ 128,571,428,573 =
0.866025403745 ≈
0.87