This is the 828th most frequent Hebrew word.
לכמה
"How many" or "for how many."
In this sentence, 'לכמה' is used to ask about a duration of minutes, specifying a measure of time.
לכמה דקות אתה נשאר?
For how many minutes are you staying?
Here, 'לכמה' is used to ask about a specific number or count.
לכמה חברים יש לך?
How many friends do you have?
This usage shows 'כמה' as a quantitative inquiry in the context of time.