Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,401/900,000,000,011
- The integer number above the bar is called numerator: 779,422,863,401
- 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 = 779,422,863,401 ÷ 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:
779,422,863,401 = 7 × 7 × 13 × 1,223,583,773 = 72 × 13 × 1,223,583,773
779,422,863,401 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.
779,422,863,401/900,000,000,011 =
(779,422,863,401 ÷ 49) / (900,000,000,011 ÷ 49) =
15,906,589,049/18,367,346,939
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.
779,422,863,401/900,000,000,011 =
(72 × 13 × 1,223,583,773)/(72 × 29 × 7,817 × 81,023) =
((72 × 13 × 1,223,583,773) ÷ 72) / ((72 × 29 × 7,817 × 81,023) ÷ 72) =
(13 × 1,223,583,773)/(29 × 7,817 × 81,023) =
15,906,589,049/18,367,346,939
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
15,906,589,049/18,367,346,939 =
15,906,589,049 ÷ 18,367,346,939 =
0.866025403768 ≈
0.87