Peter needs to buy birdseed to last a week. He knows that each parakeet eats 2 grams a day. His parrots eat 14 grams a day. His finches eat half of what a parakeet eats. If he has 3 parakeets, 2 parrots and 4 finches, how many grams of birdseed does he need to buy?
His parakeets eat 6 grams a day, because three parakeets times two grams each equals 6 grams.
His parrots will eat 28 grams a day because two parrots times 14 grams equals 
<gadget id="calculator">2*14</gadget>
<output>28</output>
28 grams.
Each finch will eat 1 gram a day, because they eat half of what a parakeet does and 1/2 of 2 equals one.
His finches will eat 4 grams a day because four finches times 1 gram equals 4 grams.
His birds eat 38 grams a day because 6 plus 28 plus 4 equals 
<gadget id="calculator">6+28+4</gadget>
<output>38</output>
38.
Each week has 7 days.
Therefore, in a week he will need 266 grams because 7 times 38 equals 
<gadget id="calculator">7*38</gadget>
<output>266</output>
266.

<result>266</result>