I need help with me changing the quantity and it doubling the price or tripling etc.

When I change the quantity it just adds a 1 to the sum total or if I change it to 2 in the quantity it just adds a 2 to the total. I need it to double or triple the final price.

http://form.jotform.us/form/50973930452155

Hi,

In that case, you should multiply the quantity instead of just adding it in the equation. I've fixed it for you, you should do it like this:

Thanks