In Canada, for every moose there are two beavers, and for every beaver there are 19 humans.  If there are 38 million people in Canada, what is the moose population of Canada, in millions?
If there are 19 humans for every one beaver, then there are 38 million/19=<<38/19=2>>2 million beavers in Canada.
And if for every one moose there are two beavers, then the moose population of Canada is 2 million/2=<<2/2=1>>1 million.
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