forty billion 40,000,000,000
It is forty million and ninety or forty million, ninety.
Forty-three billion (43,000,000,000).
40 10,000/forty ten thousands
40,048,000
Factors refer to whole numbers, not fractions.
forty billion 40,000,000,000
Forty-first = 41st
0.040
You would write forty-three thousandths as: .043.
40,840
44,044
Forty-four.
I would write it as five and forty-five thousandths.
Forty thousandths.
'Forty point zero four four'.
forty