I was reading through several previous threads about this same matter, and I finally decided to take this old thread, and try to follow panjadrum's suggestion above, and I would appreciate if you correct me the following number, accordingly. I am just adding one more three-digit set to the same number in order to have the million section.

255,**513,980**:

two hundred** and** fifty-five **million,** five hundred **and** thirteen **thousand, **nine hundred** and** eighty.

My bigger concern is about the use of the "and" in the million and thousand sections, and if I should write the commas (**,**) between each three digits sets.

Thanks again,