The meaning is as follows:

A running bill is a bill used in commercial transactions, which is usually used to record the amount and date of multiple transactions. A running bill is usually a piece of paper with several blank lines, and each blank line has different columns, including date, commodity name, quantity, unit price and amount. When a merchant conducts multiple transactions, the detailed information of each transaction can be recorded on the running bill for subsequent checking and statistics.

Running bills are used for small transactions, such as grocery stores, small supermarkets, restaurants, etc. Merchants can use them to record daily sales for reconciliation and management, and they can also be used to manage personal income and expenditure, such as recording monthly household expenses and shopping lists.