Matt's entire family was going to spend the week at the lake house for vacation.  Matt's family included his mom, dad, his older brother and his wife and their 4 kids.  His Uncle Joe and his wife were also coming and would bring their 3 kids.  The house only sleeps 4 people.  Everyone else would sleep 2 to a tent outside.  How many tents would they need?
We need to add Matt's entire family together so 1+2+2+4+2+3 = 
<gadget id="calculator">1+2+2+4+2+3</gadget>
<output>14</output>
14.
Only 4 people could sleep in the house so 14-4 = 
<gadget id="calculator">14-4</gadget>
<output>10</output>
10 people would sleep in a tent.
Each tent sleeps 2 people and there were 10 people left so 10/2 = 
<gadget id="calculator">10/2</gadget>
<output>5</output>
5 tents were needed.

<result>5</result>