Robby doesn't like the color brown and will not eat the brown M&M's.  On his first bag, he sets aside  9 brown M&M's.  On the second bag, he sets aside 12.  On his third & fourth bag, there are 8 brown M&M's that he doesn't eat. On his fifth bag, there are only 3 brown M&M's that he doesn't eat.  What's the average number of brown M&M's in a bag?
Out of 5 bags, he had 9+12+8+8+3 = 
<gadget id="calculator">9+12+8+8+3</gadget>
<output>40</output>
40 brown M&amp;M's.
He ate 5 bags so the average number of brown M&amp;M's per bag was 40/5 = 
<gadget id="calculator">40/5</gadget>
<output>8</output>
8 brown M&amp;M's.

<result>8</result>