question: Gary likes to walk around the edge of the local park, which is a rectangle that measures 1.5 miles by 6 miles. If he walks at 3 miles/hour, how many hours does he spend walking?
answer: First find the length of the two long sides of the park: 6 miles * 2 = <<6*2=12>>12 miles
  Then find the length of the two short sides of the park: 1.5 miles * 2 = <<1.5*2=3>>3 miles
  Then add those two lengthes to find the total distance around the park: 12 miles + 3 miles = <<12+3=15>>15 miles
  Then divide the total length by Gary's speed to find how long he spends walking: 15 miles / 3 miles/hour = <<15/3=5>>5 hours
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