
Eighteen kilometers PER hour.
Money Heist Season 3, Episode 8

has to be four revolutions PER second.
The Big Bang Theory Season 10, Episode 20

He was so busy figuring out
how many parts PER million of urine...
The Big Bang Theory Season 8, Episode 9

...between the number of chirps PER
minute and the ambient temPERature.
The Big Bang Theory Season 3, Episode 2

Accelerating at an initial rate
of 32 feet PER second.
The Big Bang Theory Season 1, Episode 2