Arectangular park is 150 yards on one side and 125 yards on the other. if someone wanted to walk 1,000,000 yards, how many times would she have to walk
around the park? i'm so stuck on this and i dont know why.

The perimeter of the park is (125+150)*2=550 yards.  Then, to walk a million years, you would need to walk 1000000/550=1818.18 perimeters.  Since we're looking for the amount of times we have to walk around the park fully to hit 1,000,000 yards, though, we must round up (even though normally with a decimal of .18 we'd round down) to 1819 times.