Chinese phrase
能把数量换成〜吗？ néng bǎ shù liàng huàn chéng 〜 ma
Meaning
Can the quantity be changed to ___?
When to use it
It politely asks to change a quantity to a set amount. It suits orders and other requests when a specific new amount is needed.
Example dialogue
能把数量换成三份吗？ néng bǎ shù liàng huàn chéng sān fèn ma
Can you change the quantity to three servings?
可以，给您改成三份。 ké yǐ gěi nín gǎi chéng sān fèn
Sure, I'll change it to three servings for you.