English Translation
I’ll show you how it works.
Πώς is missing an accent here. Πώς and πως are two different words:
Πώς = how
Δεν ξέρω πώς να το κάνω. / I don’t know how to do it.
Πώς πέρασες χθες; / How did you spend your time yesterday?
Πως = that
Ξέρω πως είναι αλήθεια. / I know that it is true.
Νομίζω πως έχεις δίκιο. / I think that you are right.