230.7
9,034.7
It is 9034.7
thirty-seven and eight tenths
0.739
Fifty-six thousand, two hundred thirty-seven hundred thousandths
The decimal notation for thirty and seven-tenths is 30.7
37.4
thirty-seven and eight tenths
It is 9034.7
9,034.7
Five thousand, seven hundred and thirty. Or, Five thousand, seven hundred and thirty point zero (if you want to keep it as a decimal to two decimal places).
"One hundred and thirty-seven". Or "one hundred, thirty-seven". (if the number modifies a larger number, use the "and", as in "one hundred and thirty-seven thousand"). For room numbers, employee ID numbers, and so forth, a simple "one three seven" or "one thirty seven" can be used.
one hundred eighty- seven and thirty-three tenths
0.739
7000.437
Fifty-six thousand, two hundred thirty-seven hundred thousandths
Thirty-seven thousand, nine hundred seventy-one and seven tenths.