Power Automate (WDL) function

mul / div — Power Automate (WDL) function reference

Multiply or divide.

Syntax

wdl

mul(multiplicand1, multiplicand2) / div(dividend, divisor)

wdl

div(variables('total'), 2)

→ A number

wdl

mul(item()?['UnitPrice'], item()?['Quantity'])

→ A line total

wdl

div(float(variables('completed')), float(variables('totalTasks')))

→ A completion ratio between 0 and 1

div of two integers does integer division — wrap an argument in float() for decimals.
div() of two integers truncates toward zero (integer division) rather than returning a decimal — div(7, 2) is 3, not 3.5; wrap an argument in float() to get a real quotient.
Dividing by zero throws "division by zero" at runtime rather than returning infinity or null — guard the divisor with an equals(..., 0) check first.

From Math