The interrogative quantifier 几 ji3 ‘how many’ or 多少 duo1shao3 ‘how many’ can fill in the NUM position. 几 represents a number smaller than ten, while 多少can refer to any number, for instances,

他偷了几辆车呢？

ta1 tou1 le0 ji3 liang4 che1 ne0

he steal LE how_many CL car NE

‘How many cars did he steal?’

你还剩多少钱？

ni3 hai2 sheng4 duo1shao3 qian2

you yet remain how_many money

‘How much money is left with you?’

Reference:

Shi, Dingxu. 2016. Nouns and nominal phrases. In A Reference Grammar of Chinese, eds. by Chu-Ren Huang and Dingxu Shi. Cambridge University Press.