To convert a fraction to a decimal, you divide the numerator by the denominator - on a calculator, or using long division.
If I understand this right, you want to know how to convert a fraction into a decimal with the aid of a calculator. This is usually done by pressing the fraction button on your calculator which changes it from a fraction to a decimal and vice versa.
The only way, without a calculator, that I know of is long division.
Divide the numerator by the denominator
That function depends on the calculator's capabilites. Some calculators do not show fractions. They only represent fractions as a decimal value (e.g. 50% is represented in the calculator as .5). If your calculator has a fraction function, you can enter 50% then press the fraction button & it will display 1/2 (which is the lowest fraction for 50%).
It is called a [decimal] fraction.
By using a calculator, enter: (integer) / (decimal)
5/8 = 5 divided by 8 = 0.625
Multiply both numbers by five- to get the fraction 85/100... which is 85%
Based on the decimal fraction part it looks like this is a rounded answer to division by three. If so, multiply the whole thing by three on a calculator, round, then convert to a fraction using three for the denominator. Using Windows 7 calculator, 71.6666667 * 3 = 215.0000001. You are probably looking at 215/3 for the answer as an improper fraction, or 71 2/3 as a proper fraction.
6.03 IS expressed using decimal form!
using a calculator, type in 25 / (divided by) 31