Marketing

This app is a wonderful tool for any participant in a transaction. 
It is used to calculate a total, one item at a time based on the price and quantity of each item. 
It can include both positive and negative prices (for debts). 
The total and it's formula, are displayed clearly in a scrollable text. 
Clear is used to reset the total to zero. 
Done can be used to lower the keyboard at will.
Total is used to add a new item and update the total & it's formula.