Board Thread:Support Requests - Getting Technical/@comment-32841066-20180110051243

I'm from Xenoblade Wiki.

How can an infobox to multiply a parameter by a constant in the simplest way possible?

The sell price of an item never changes, and the buy price is 2x, 1.8x, 1.6x, 1.4x, 1.2x, or 1x the sell price, depending on the region's Development Level. However, it seems unnecessary to include every price as a parameter to the infobox when it could be calculated from a single number, the sell price. I'd just like to know how to make a template perform multiplication, so then I can put it multiple times.

TL;DR: How to multiply? 