Terry's mom brought home 4 different colored dogs from the shelter. The brown dog weighs 4 pounds. The black dog weighs 1 pound more than the brown dog. The white dog weighs twice as much as the brown dog. The grey dog weighs 2 pounds less than the black dog. What's the average weight of all the dogs?
Since the black dog weighs 1 pound more than the brown dog, the black dog weighs 1 + 4 = 
<gadget id="calculator">1+4</gadget>
<output>5</output>
5 pounds.
The white dog weighs 4 * 2 = 
<gadget id="calculator">4*2</gadget>
<output>8</output>
8 pounds.
Because the grey dog weighs 2 pounds less than the black dog, the grey dog weighs 5 - 2 = 
<gadget id="calculator">5-2</gadget>
<output>3</output>
3 pounds.
The total weight of all dogs is 4 + 5 + 8 + 3 = 
<gadget id="calculator">4+5+8+3</gadget>
<output>20</output>
20 pounds.
The average weight of all the dogs is 20 / 4 = 
<gadget id="calculator">20/4</gadget>
<output>5</output>
5 pounds.

<result>5</result>