Fraction format support for 1/2, 1/4, 1/5, 1/8, 1/16, 1/10, 1/100

[mP1]

https://support.office.com/en-us/article/display-numbers-as-fractions-0121ecac-1773-4f2d-8cd3-7db51fd83b77

Fraction format	This format displays 123.456 as
Single-digit fraction	123 1/2, rounding to the nearest single-digit fraction value
Double-digit fraction	123 26/57, rounding to the nearest double-digit fraction value
Triple-digit fraction	123 57/125, rounding to the nearest triple-digit fraction value
Fraction as halves	123 1/2
Fraction as quarters	123 2/4
Fraction as eighths	123 4/8
Fraction as sixteenths	123 7/16
Fraction as tenths	123 5/10
Fraction as hundredths	123 46/100

• TODO Update parser to support selecting denominators.