Large Numbers

Need confirmation. No recasts to numbers, please. One or two below?

(1) The cashier said, "The customer made a one–hundred–dollar, seventy–nine–cent purchase."

(2) The cashier said, "The customer made a one–hundred–dollar seventy–nine–cent purchase." (No comma after "dollar"?)

For large spelled–out numbers, would you place the commas after each number the same way they'd appear in the numeric representation?

Which would you go with—one or two? I think number one because we need the commas for optimal clarity.

25,250,869
(1) twenty–five million, two hundred fifty thousand, eight hundred sixty–nine


(2) twenty–five million two hundred fifty thousand eight hundred sixty–nine