Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,366/900,000,000,118
- The integer number above the bar is called numerator: 779,422,863,366
- The integer number below the bar is called denominator: 900,000,000,118
- 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 = 779,422,863,366 ÷ 900,000,000,118
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:
779,422,863,366 = 2 × 3 × 3 × 3 × 3 × 7 × 47 × 14,623,867 = 2 × 34 × 7 × 47 × 14,623,867
779,422,863,366 is a composite number.
900,000,000,118 = 2 × 450,000,000,059
900,000,000,118 is a composite number.
779,422,863,366/900,000,000,118 =
(779,422,863,366 ÷ 2) / (900,000,000,118 ÷ 2) =
389,711,431,683/450,000,000,059
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.
779,422,863,366/900,000,000,118 =
(2 × 34 × 7 × 47 × 14,623,867)/(2 × 450,000,000,059) =
((2 × 34 × 7 × 47 × 14,623,867) ÷ 2) / ((2 × 450,000,000,059) ÷ 2) =
(34 × 7 × 47 × 14,623,867)/450,000,000,059 =
389,711,431,683/450,000,000,059
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
389,711,431,683/450,000,000,059 =
389,711,431,683 ÷ 450,000,000,059 =
0.866025403626 ≈
0.87