Fruit Machine Chat

Hi, I'm sorry if I repeat my question.
I'm slot engineer , but from soon.
Can someone help me and tell me how to read all meters at fruit machines- how to calculate only from meters how much money have been put in , and how much money have been paid out?
Thank you in advance!

Open bottom door. Let machine start up
You should get it say READ METERS?
Hit start, and scan your way through.

What they do in the club is write down on a bit of paper what the cash in meter is on and cash paid out is on then next week subtract the old numbers from the new ones then subtract the paid out from cash put in

thank you