YOU SAID:
i sleept like three hours last night
INTO JAPANESE
昨夜は3時間くらい寝た
BACK INTO ENGLISH
I slept for 3 hours last night
INTO JAPANESE
昨夜は3時間寝た
BACK INTO ENGLISH
i slept 3 hours last night
INTO JAPANESE
私は昨夜3時間寝た
BACK INTO ENGLISH
i slept 3 hours last night
You've done this before, haven't you.