I have a quantities sheet. where I receive new inventory, shift from one department to another, and ship out. I currently have columns with the quantities of each location and would like to be able to create a series of formulas that allow me to enter a number of quantity delivered or shipped each day in a separate cell, and have that number added or subtracted from my official quantity automatically. I do not know how to set this up, as I only want to have to enter the new daily delta in a cell, not continually add to a large number. How could I make the cell send the command to alter the quantities, have them set as the new values, then clear itself and ready for the next input?