permille
Divides its argument by 1000, thus converting a permille into its corresponding fraction.
Syntax

permille(x)

x
is a real or complex number

Description
This function divides its argument by 1000, thus converting a permille into its corresponding fraction.
Notes
This is the function behind the postfix operator ‰. Typically you use the operator instead of calling the permille
function directly.
Examples
500‰
0.5 (=1/2)
750‰ ⋅ 5590
4192.5 (=8385/2)