Chemistry Question, Please help! Quiz in 4 hours!?

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Ivan

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A solution of ammonia and water contains 1.30×1025 water molecules and 6.40×1024 ammonia molecules. How many total hydrogen atoms are in this solution?

I've tried this problem a couple of times and cant get it! HELP PLEASE, there is a quiz in 4 hours!!
EDIT: The question is A solution of ammonia and water contains 1.30×10^25 water molecules and 6.40×10^24 ammonia molecules. How many total hydrogen atoms are in this solution?
 
1.30x1025 x 2 = 2665
6.40x1024 x 3 = 19660.8
--------------- +
22325.8 hydrogen atoms
that's how i would do it,
2 hydrogen atoms in water
3 hydrogen atoms in ammonia..
good luck!
 
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