Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
18,147,557,871/150,000,000,030
- The integer number above the bar is called numerator: 18,147,557,871
- The integer number below the bar is called denominator: 150,000,000,030
- 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 = 18,147,557,871 ÷ 150,000,000,030
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:
18,147,557,871 = 3 × 3 × 3 × 8,573 × 78,401 = 33 × 8,573 × 78,401
18,147,557,871 is a composite number.
Written with exponents:
150,000,000,030 = 2 × 3 × 3 × 5 × 1,666,666,667 = 2 × 32 × 5 × 1,666,666,667
150,000,000,030 is a composite number.
18,147,557,871/150,000,000,030 =
(18,147,557,871 ÷ 9) / (150,000,000,030 ÷ 9) =
2,016,395,319/16,666,666,670
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.
18,147,557,871/150,000,000,030 =
(33 × 8,573 × 78,401)/(2 × 32 × 5 × 1,666,666,667) =
((33 × 8,573 × 78,401) ÷ 32) / ((2 × 32 × 5 × 1,666,666,667) ÷ 32) =
(3 × 8,573 × 78,401)/(2 × 5 × 1,666,666,667) =
2,016,395,319/16,666,666,670
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
2,016,395,319/16,666,666,670 =
2,016,395,319 ÷ 16,666,666,670 =
0.120983719116 ≈
0.12