Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
18,147,557,970/150,000,000,122
- The integer number above the bar is called numerator: 18,147,557,970
- The integer number below the bar is called denominator: 150,000,000,122
- 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 = 18,147,557,970 ÷ 150,000,000,122
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:
18,147,557,970 = 2 × 3 × 3 × 5 × 17 × 19 × 624,271 = 2 × 32 × 5 × 17 × 19 × 624,271
18,147,557,970 is a composite number.
150,000,000,122 = 2 × 7 × 2,647 × 4,047,709
150,000,000,122 is a composite number.
18,147,557,970/150,000,000,122 =
(18,147,557,970 ÷ 2) / (150,000,000,122 ÷ 2) =
9,073,778,985/75,000,000,061
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.
18,147,557,970/150,000,000,122 =
(2 × 32 × 5 × 17 × 19 × 624,271)/(2 × 7 × 2,647 × 4,047,709) =
((2 × 32 × 5 × 17 × 19 × 624,271) ÷ 2) / ((2 × 7 × 2,647 × 4,047,709) ÷ 2) =
(32 × 5 × 17 × 19 × 624,271)/(7 × 2,647 × 4,047,709) =
9,073,778,985/75,000,000,061
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
9,073,778,985/75,000,000,061 =
9,073,778,985 ÷ 75,000,000,061 =
0.120983719702 ≈
0.12