Multiplying each cell in a selection by a variable

Hi all,

very easy one incomming: I want to code the equivalent of selecting a cell and copying it, then making another selection and pressing ctrl+alt+v and chosing multiply.

I can do it by :

For each cell in Selection

cell = cell * variable '(variable is named mul in my example)

next cell

But as many of you know, this takes ages compared to a simple paste/multiply.

I'm sure there is a easy solution how to multiply a whole selection by a value.

Thanks