Shitty, but you could easily tie the time-per-customer to the number of items, then standardize around item-time. Compare that to the number customers, and bob’s your uncle.
Not just slang, but chosing to ignore (or not being aware of) grammar rules. Is it possible some are being discarded due to more purposeful disregard? Like, “no one cares to write that way any more”
I’m curious, I often see it discussed now that slang and alternative interpretation must be accepted. In general, this is true, as languages change over time naturally.
But based on what you say, it seems like all pretense of language “standards” are deprioritized or discarded…
Clubs and volunteering. Even at a homeless shelter or similar.
Volunteering is especially powerful because you are implicitly “supposed” to be there. Your presence is already explained and accepted, due to the service mission of the volunteer organization.
Therefore you have already achieved the first step of building friendships: shared experience, and shared time spent. Now that those are established you can step out beyond that to get drinks or pursue a then discovered shared hobby, like cycling or hiking or gaming whatever.