# Using Little's law to find the average N of customers

I'm trying to understand Little's law and can't seem to get past this scenario:

Let's say people arrive at the register at 12 per hour. It takes 10 minutes (1/6 of an hour) to service each one of them. The law says that the long-term average number of customers is 12 * 1/6 = 2. After the first hour, my assumption is that there will be 6 customers not serviced. Then after the second hour, there will be 6 more. Why is the long-term average 2 and not the storeCapacity?

Is my usage of the law wrong because I'm not talking about a stable system?