Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,394/900,000,000,056
- The integer number above the bar is called numerator: 779,422,863,394
- The integer number below the bar is called denominator: 900,000,000,056
- 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 = 779,422,863,394 ÷ 900,000,000,056
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:
779,422,863,394 = 2 × 7 × 199 × 279,764,129
779,422,863,394 is a composite number.
Written with exponents:
900,000,000,056 = 2 × 2 × 2 × 79 × 1,424,050,633 = 23 × 79 × 1,424,050,633
900,000,000,056 is a composite number.
779,422,863,394/900,000,000,056 =
(779,422,863,394 ÷ 2) / (900,000,000,056 ÷ 2) =
389,711,431,697/450,000,000,028
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.
779,422,863,394/900,000,000,056 =
(2 × 7 × 199 × 279,764,129)/(23 × 79 × 1,424,050,633) =
((2 × 7 × 199 × 279,764,129) ÷ 2) / ((23 × 79 × 1,424,050,633) ÷ 2) =
(7 × 199 × 279,764,129)/(22 × 79 × 1,424,050,633) =
389,711,431,697/450,000,000,028
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
389,711,431,697/450,000,000,028 =
389,711,431,697 ÷ 450,000,000,028 =
0.866025403717 ≈
0.87