 <translate> Brody’s calculator can run for 60 hours on a full battery. Brody has used three quarters of its battery up, and he is about to take a two-hour math exam that will require his calculator the whole time. How many hours of battery will Brody’s calculator have left? Give me reasons, before answering the question <yor> Ẹ̀rọ ìṣirò Brody lè máa ṣiṣẹ́ fún wákàtí mẹ́rìndínláàádọ́ta bí bátìrì rẹ̀ bá ti kún. Ó fẹ́rẹ̀ẹ́ tó wákàtí méjì tí Brody á fi ṣe ìdánwò nípa ìṣirò, èyí tó máa gba pé kó máa lo kálukútẹ́ẹ̀tì rẹ̀ ní gbogbo ìgbà tó bá ń ṣe ìdánwò náà. Wákàtí mélòó ni kàlẹ́ńtà Brody á fi wà láàyè? Sọ ìdí tó o fi ṣe é, kó o tó dáhùn ìbéèrè mi. 