Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,415/900,000,000,040
- The integer number above the bar is called numerator: 779,422,863,415
- The integer number below the bar is called denominator: 900,000,000,040
- 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 = 779,422,863,415 ÷ 900,000,000,040
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:
779,422,863,415 = 5 × 7 × 37 × 601,870,937
779,422,863,415 is a composite number.
Written with exponents:
900,000,000,040 = 2 × 2 × 2 × 5 × 29 × 7,577 × 102,397 = 23 × 5 × 29 × 7,577 × 102,397
900,000,000,040 is a composite number.
779,422,863,415/900,000,000,040 =
(779,422,863,415 ÷ 5) / (900,000,000,040 ÷ 5) =
155,884,572,683/180,000,000,008
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.
779,422,863,415/900,000,000,040 =
(5 × 7 × 37 × 601,870,937)/(23 × 5 × 29 × 7,577 × 102,397) =
((5 × 7 × 37 × 601,870,937) ÷ 5) / ((23 × 5 × 29 × 7,577 × 102,397) ÷ 5) =
(7 × 37 × 601,870,937)/(23 × 29 × 7,577 × 102,397) =
155,884,572,683/180,000,000,008
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
155,884,572,683/180,000,000,008 =
155,884,572,683 ÷ 180,000,000,008 =
0.866025403756 ≈
0.87