
Six toes PER foot
or six toes total?
The Big Bang Theory Season 12, Episode 20

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

And Per Se has Thomas Keller.
Breaking Bad Season 5, Episode 16

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

Eighteen parts PER million.
The Big Bang Theory Season 8, Episode 9