Barkley gets 10 new dog bones at the beginning of the month.  After 5 months, he has 8 bones available and has buried the rest.  How many bones has he buried?
He gets 10 new bones, every month for 5 months so he has 10*5 = 
<gadget id="calculator">10*5</gadget>
<output>50</output>
50 dog bones.
He has 8 bones available which means he has buried 50-8 = 
<gadget id="calculator">50-8</gadget>
<output>42</output>
42 bones.

<result>42</result>