The answer will depend on what the fraction is.
Seven.
Seven million
Seven tenths.
Forty-nine sevenths.
Seventy million two.
The seven forty five train.
just the arabic number 7. in words it is "sieben"
One hundred ninety-two and 7 hundredths.
June seven, two thousand thirteen.
It is eighty seven hundredths.
5 plus the product of 7 and n.