Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
18,147,557,825/150,000,000,065
- The integer number above the bar is called numerator: 18,147,557,825
- The integer number below the bar is called denominator: 150,000,000,065
- 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 = 18,147,557,825 ÷ 150,000,000,065
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:
18,147,557,825 = 5 × 5 × 83 × 97 × 90,163 = 52 × 83 × 97 × 90,163
18,147,557,825 is a composite number.
150,000,000,065 = 5 × 30,000,000,013
150,000,000,065 is a composite number.
18,147,557,825/150,000,000,065 =
(18,147,557,825 ÷ 5) / (150,000,000,065 ÷ 5) =
3,629,511,565/30,000,000,013
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.
18,147,557,825/150,000,000,065 =
(52 × 83 × 97 × 90,163)/(5 × 30,000,000,013) =
((52 × 83 × 97 × 90,163) ÷ 5) / ((5 × 30,000,000,013) ÷ 5) =
(5 × 83 × 97 × 90,163)/30,000,000,013 =
3,629,511,565/30,000,000,013
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
3,629,511,565/30,000,000,013 =
3,629,511,565 ÷ 30,000,000,013 =
0.120983718781 ≈
0.12