word problems try your skill to handle significant products from fluff. the main products in this difficulty are 2058, 2/7, and the word "of" interior the final sentence. constantly once you notice the word, "of" translate that to multiplication. So 2/7 of 2058 is two/7 x 2058, or 2 x 294, = 588 miles.
I would say that as both of them are years (point of reference of time) we cannot add them. However we can look at problem in a different way:
2007 -- 365 days
2008 -- 366 days
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Add -- 731 days
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