mujay Access 2003 main forms main calculations kaisay ki jati hai.. I mean sum ka formula total ka formula aur multiply ka formula discount nikaalana ho kisi bhi cheez ka bus values ko enter karian aur calculation ho jaya... ap kay pas es ka koi hal hai. or kindly provide me videos or online any help.. example below hai...

Product ID: s101
Product Name: Monitors
Qty 10
Sale Price 2500
Discount anything
Total Price ........ automatic

jab disocunt 5% ho or kuch neech total automatic aa jay Acces 2003 main.