Hello everyone I hope you're doing will
I'm trying to do some math here
I have 5 variables that I work with
how things work: I have a box weight, boxes count, total weight and sum weight
Ex.
box weight = 2
boxes count = 10
10 × 2 = 20
total weight = 200
sum = 200 - 20 = 180
however when I click again it doesn't sum right
if I add another 200 it will be like this
400 - 380 instead of 360 it added 200 not 180
total weight of 10 boxes with the goods is 200
the box weight is 2
so 10 boxes without the goods = 20 kilo
10 boxes with the goods = 200 kilo
take out 20 from 200 = 180
