# Numeric Entries¶

All numeric entries in horizon support basic two-operand math as well as some other goodies.

They look like these:

Both point and comma are recognized as a decimal separator regardless of locale settings. By default all numbers are treated as millimeters. Suffixing a number with an i or in will treat it as inches. Use mi or mil to convert from thous.

Additionally, two-operand infix math is supported, so you can to this:

Addition: 1+2

Subtraction: 1-2

Multiplication: 3*2

Division: 3/2

Average $$\frac{ a+b }{2}$$: 3|2

Adding mm and inch: 1in+2mm