Thirteen and a quarter is 13.25 as a decimal number.
Other Word Forms of Decimal Number
Decimal Number Sentence Examples
An exact decimal is a decimal number that does not go on forever.
The answer for graphics designers came in the form of hexadecimal notation - which starts with the digits 0-9 just like decimal number systems, but instead of going on to "10" it instead goes into the letters A-F.
So to write the decimal number "10" in hexadecimal notation, it would be "A".