Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,408/900,000,000,012
- The integer number above the bar is called numerator: 779,422,863,408
- The integer number below the bar is called denominator: 900,000,000,012
- 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 = 779,422,863,408 ÷ 900,000,000,012
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:
779,422,863,408 = 2 × 2 × 2 × 2 × 3 × 7 × 23,599 × 98,297 = 24 × 3 × 7 × 23,599 × 98,297
779,422,863,408 is a composite number.
Written with exponents:
900,000,000,012 = 2 × 2 × 3 × 75,000,000,001 = 22 × 3 × 75,000,000,001
900,000,000,012 is a composite number.
779,422,863,408/900,000,000,012 =
(779,422,863,408 ÷ 12) / (900,000,000,012 ÷ 12) =
64,951,905,284/75,000,000,001
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.
779,422,863,408/900,000,000,012 =
(24 × 3 × 7 × 23,599 × 98,297)/(22 × 3 × 75,000,000,001) =
((24 × 3 × 7 × 23,599 × 98,297) ÷ (22 × 3)) / ((22 × 3 × 75,000,000,001) ÷ (22 × 3)) =
(22 × 7 × 23,599 × 98,297)/75,000,000,001 =
64,951,905,284/75,000,000,001
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
64,951,905,284/75,000,000,001 =
64,951,905,284 ÷ 75,000,000,001 =
0.866025403775 ≈
0.87