Subtotal not calculating
Hello,
The subtotal category is not working properly and I was wondering if someone could please help me with this. When I put in a quantity of something, it does not calculate the subtotal until I enter another quantity in another field. For example, If I am trying to put in a quantity for medium t-shirts @ $10 piece, it should subtotal to $40 but it will not subtotal unless I put in a quantity in another field (such as 2 quantity of large t-shirts), after I input the quantity of another field, it subtotals the field before. So in order to calculate my medium t-shirt order, I have to put something in the large t-shirt category as well. But if I don't want any large t-shirts, it will not calculate. I checked the order and calculations and they are all correct. Can someone please help me with this? Please see screenshots below:


