TA (also called AC) is the average amount of each transaction.

TC transaction times.

the relationship between ta and TC is that TA=SALES/TC

a thousand simple understandings refer to how many people have bought a product out of 1111 customers.

For example, 51 hamburgers were sold today, and 211 customers were received today. Then the thousand times of the hamburger is =51/211*1111=251, that is to say. There are 251 hamburgers in the 1111 business.

the above data can be found in the cash register report at the front desk. You can ask the management team of the restaurant to get these reports and how to read them.