quotient (n.)youdaoicibaDictYouDict[quotient 词源字典]
"number of times one quantity is contained in another," mid-15c., from Latin quotiens "how often? how many times?; as often as," pronominal adverb of time, from quot "how many?" (see quote (v.)). The Latin adverb quotiens was mistaken in Middle English for a present participle in -ens.[quotient etymology, quotient origin, 英语词源]