Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,406/900,000,000,031
- The integer number above the bar is called numerator: 779,422,863,406
- The integer number below the bar is called denominator: 900,000,000,031
- 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 = 779,422,863,406 ÷ 900,000,000,031
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:
779,422,863,406 = 2 × 11 × 35,428,311,973
779,422,863,406 is a composite number.
900,000,000,031 = 11 × 81,818,181,821
900,000,000,031 is a composite number.
779,422,863,406/900,000,000,031 =
(779,422,863,406 ÷ 11) / (900,000,000,031 ÷ 11) =
70,856,623,946/81,818,181,821
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.
779,422,863,406/900,000,000,031 =
(2 × 11 × 35,428,311,973)/(11 × 81,818,181,821) =
((2 × 11 × 35,428,311,973) ÷ 11) / ((11 × 81,818,181,821) ÷ 11) =
(2 × 35,428,311,973)/81,818,181,821 =
70,856,623,946/81,818,181,821
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
70,856,623,946/81,818,181,821 =
70,856,623,946 ÷ 81,818,181,821 =
0.866025403755 ≈
0.87