Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,362/900,000,000,119
- The integer number above the bar is called numerator: 779,422,863,362
- The integer number below the bar is called denominator: 900,000,000,119
- 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 = 779,422,863,362 ÷ 900,000,000,119
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:
779,422,863,362 = 2 × 11 × 13 × 2,725,254,767
779,422,863,362 is a composite number.
900,000,000,119 = 11 × 6,287 × 13,013,867
900,000,000,119 is a composite number.
779,422,863,362/900,000,000,119 =
(779,422,863,362 ÷ 11) / (900,000,000,119 ÷ 11) =
70,856,623,942/81,818,181,829
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.
779,422,863,362/900,000,000,119 =
(2 × 11 × 13 × 2,725,254,767)/(11 × 6,287 × 13,013,867) =
((2 × 11 × 13 × 2,725,254,767) ÷ 11) / ((11 × 6,287 × 13,013,867) ÷ 11) =
(2 × 13 × 2,725,254,767)/(6,287 × 13,013,867) =
70,856,623,942/81,818,181,829
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
70,856,623,942/81,818,181,829 =
70,856,623,942 ÷ 81,818,181,829 =
0.866025403621 ≈
0.87