"Eleven bags of rice" in Engpsh.
The origin of this phrase is unclear. But in general, when referring to the quantity of something, it is common to use the number followed by the unit of measurement, in this case, "bags" and "of rice".
Example sentences in Engpsh:
I need to buy eleven bags of rice for the family reunion.
She stored eleven bags of rice in the pantry.
Example translations in Chinese:
我需要买十一袋大米给家庭聚会。
她把十一袋大米存在食品室里。