Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
18,147,557,855/150,000,000,087
- The integer number above the bar is called numerator: 18,147,557,855
- The integer number below the bar is called denominator: 150,000,000,087
- 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 = 18,147,557,855 ÷ 150,000,000,087
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:
18,147,557,855 = 5 × 7 × 518,501,653
18,147,557,855 is a composite number.
150,000,000,087 = 3 × 7 × 7,142,857,147
150,000,000,087 is a composite number.
18,147,557,855/150,000,000,087 =
(18,147,557,855 ÷ 7) / (150,000,000,087 ÷ 7) =
2,592,508,265/21,428,571,441
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.
18,147,557,855/150,000,000,087 =
(5 × 7 × 518,501,653)/(3 × 7 × 7,142,857,147) =
((5 × 7 × 518,501,653) ÷ 7) / ((3 × 7 × 7,142,857,147) ÷ 7) =
(5 × 518,501,653)/(3 × 7,142,857,147) =
2,592,508,265/21,428,571,441
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
2,592,508,265/21,428,571,441 =
2,592,508,265 ÷ 21,428,571,441 =
0.120983718963 ≈
0.12