Why do people say for example it's eight o eight when the letter o is not a number? why don't they say it's eight zero eight?

Which detail from the diary of a young girl supports the idea that anne’s voice is optimistic? “at three o'clock . . the doorbell rang. i didn't hear it, since i was out on the balcony, lazily reading in the sun.” “so much has happened it's as if the whole world had suddenly turned upside down.” “the first thing i stuck in was this diary, and then curlers, handkerchiefs, schoolbooks, a comb and some old letters.” “it may be damp and lopsided, but there's probably not a more comfortable hiding place in all of amsterdam.”

X•(-5)=60 someone plz me cause like yeah

Ispeak italian.. c'è qualcuno di italiano qua?