Sum the totals of multiple items

I have an spreadsheet with multiple items,One item can be repeated multiple times. If an item is repeated I would like get sum the amounts.


I've been doing this manually for all of the items, but that's too time consuming and my boss is already yelling. So if you have any idea on how to accomplish this I'll be very thankful!!

I've attached the spreadsheet. the actual list is 100 times longer but the size was too big.