Yes, you can say "It's fifteen to nine" to indicate it is 8:45. This is a common way to express time in English.
Nine hundred fifteen.
Las nueve y cuarto.
Nine plus fifteen is 24!
fifteen thousand, four hundred nine.
Seventeen and five thousand, nine hundred fifteen ten-thousandths.
Fifteen thousand, four hundred nine.
neuf un cinq (nine one five)orneuf cent quinze (nine hundred and fifteen)
Nine fifteen
The number 15409 in words is: Fifteen thousand, four hundred and nine.
Nine thirty.
The value 15.69 is "fifteen and sixty-nine hundredths." In US currency, it would be "fifteen dollars and sixty-nine cents."