It is: 42+15 = 57
Forty-two and fifteen hundredths
15,000,000,246
fifteen and forty-two hundredths
Forty-two and six hundred fifteen thousandths.
Two hundred fifteen million, six hundred thirty-seven thousand, forty.
It is written: two million forty thousand fifteen.
Forty-two and six hundred fifteen thousandths
15.42 = fifteen and forty-two hundredths
40,215.21
It already is a decimal. The word form is forty-two and fifteen hundredths.
45,6... wait! what? 2 fifteen hundred? ?
146002 - 115 = 145,887