Annie walked 5 blocks from her house to the bus stop. She rode the bus 7 blocks to the coffee shop. Later, she came home the same way. How many blocks did Annie travel in all?
Annie traveled 5 + 7 = 
<gadget id="calculator">5+7</gadget>
<output>12</output>
12 blocks to the coffee shop.
Her round trip would take 12 x 2 = 
<gadget id="calculator">12*2</gadget>
<output>24</output>
24 blocks.

<result>24</result>