Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
18,147,557,770/150,000,000,020
- The integer number above the bar is called numerator: 18,147,557,770
- The integer number below the bar is called denominator: 150,000,000,020
- 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 = 18,147,557,770 ÷ 150,000,000,020
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:
18,147,557,770 = 2 × 5 × 1,997 × 908,741
18,147,557,770 is a composite number.
Written with exponents:
150,000,000,020 = 2 × 2 × 5 × 13 × 223 × 2,587,099 = 22 × 5 × 13 × 223 × 2,587,099
150,000,000,020 is a composite number.
18,147,557,770/150,000,000,020 =
(18,147,557,770 ÷ 10) / (150,000,000,020 ÷ 10) =
1,814,755,777/15,000,000,002
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.
18,147,557,770/150,000,000,020 =
(2 × 5 × 1,997 × 908,741)/(22 × 5 × 13 × 223 × 2,587,099) =
((2 × 5 × 1,997 × 908,741) ÷ (2 × 5)) / ((22 × 5 × 13 × 223 × 2,587,099) ÷ (2 × 5)) =
(1,997 × 908,741)/(2 × 13 × 223 × 2,587,099) =
1,814,755,777/15,000,000,002
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
1,814,755,777/15,000,000,002 =
1,814,755,777 ÷ 15,000,000,002 =
0.120983718451 ≈
0.12