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### 5.2 Fractions

A fraction is a ratio of two integers. Fractions are traditionally written “2/3” but Calc uses the notation ‘`2:3`’. (The `/` key performs RPN division; the following two sequences push the number ‘`2:3`’ on the stack: `2 : 3 <RET>`, or `2 <RET> 3 /` assuming Fraction mode has been enabled.) When the Calculator produces a fractional result it always reduces it to simplest form, which may in fact be an integer.

Fractions may also be entered in a three-part form, where ‘`2:3:4`’ represents two-and-three-quarters. See Fraction Formats, for fraction display formats.

Non-decimal fractions are entered and displayed as ‘`radix#num:denom`’ (or in the analogous three-part form). The numerator and denominator always use the same radix.