"A box of milk has (9/10) liters", (9/10) means how many liters of milk is regarded as the unit "1", divided into 10 parts on average, indicating such 9 parts.
"一盒牛奶有(9/10)升"，(9/10)的意思是把多少升牛奶看作单位"1"，平均分成10份，表示这样的9份．
<result>1</result>