How to do math with roll queries in a macro?

I'm trying to modify the macro below for items that roll multiple dice per charge (For reference, this is the example macro given for a Cure Light Wounds wand on the pathfinder macro examples wiki page): &{template:pf_attack} {{name=Wand:Cure Light Wounds}}{{Target=@{target|Token_Name}}} {{Charges:[[?{How many charges|1}]] =Heal [[?{How many charges|1}d8 + ?{How many charges|1} ]] HP}} As is, it asks how many charges and rolls that many dice, which works for a cure light wounds wand because it's 1d8+1 per charge so you can just use the number of charges directly. But for another item that rolls for example 3d8+5 per charge, is it possible to grab the value given for charges and multiply it by the single charge number? I'm wanting to be able to, for example, tell it 3 charges and have it automatically roll 9d8+15.

Sure. You could do {{Charges:[[?{How many charges|1}]] =Heal [[[[(?{How many charges|1}*3)]]d8 + [[?{How many charges|1}]]*5]] HP}}

That works! Much thanks for the help. I didn't think something that simple would work cause I tried doing math like that with something else once before and it ended up taking the second value as the dice amount and not doing the math at all. I guess the nested rolls make a difference.