Gotcha -- you're using the european convention where periods (.) are used to delineate thousands? I'm used to using commas:

100,000,000 dollars
100.000.000 denars

In american currency, the period would only be used for fractional dollars (cents), for example, we might say:

100,000,000.25

to indicate a million dollars and twenty five cents.

How would you represent this value? Would you write:

100.000.000 + 25/100 denars?

or would you say

100.000.000.25 ?

Or do you never have fractional denars?