I would like to one which version is correct?

110$ billion -how to say this amount in English

Can I say one hundred ten billion dollars is spent? or are spent? I have some doubts because dollars can be countable? When can I say dollar or dollars? When can I make dollars plural?
Full Member332
You would use the plural in this case. One hundred (and) ten billion dollars are spent each year on...
I hope this helps.
Full Member256
How about one hundred dollar or dollars?
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the answer is One hundred dollars