That would be about 3 ml per wiener and seemson the upper end.
Assuming your mom to start fucking at 15 and slowing down at 50, that would be 43 wieners per day though. Assuming she goes till 80 that would still mean 27 wieners per day.
So your mum must be quite desired for this to work out.
Seems like $1.11 per an item, and it’s 4 items. But in situations like these it’s gas stations trying to get you to stop in under the guise of buying gas.