How much coffee do I add?

I have a little 4 cup of coffee … and outside first, I cannot figure which means 4 cups … because he cannot 4 measuring cups … Because it's too small for that … what do they mean 4 cups? Because fills only 1 1 / 2 cups. … secondly how much coffee do I put in for 4 cups of coffee? Im just using regular coffee Folgers.

fill a tablespoon should do

KU Architecture Rube Goldberg Coffee Machine