How do I get some cells entered next to a table to become part of the table

[dpaton05]

I made a table that has some cells next to it that the cells within the table need to reference in order to determine the price of the cell and I realised that I should make them part of the table as they change for every row. How do I add them to the table?

 

[dpaton05]

I found out how to add it to the table but now I am having trouble hiding the table contents so no one sees them.