Hazel walked 2 kilometers in the first hour. If she walked twice as far in the second hour, how far did she walk for 2 hours?
Hazel walked 2 x 2 = 
<gadget id="calculator">2*2</gadget>
<output>4</output>
4 kilometers in the second hour.
So, she walked 2 + 4 = 
<gadget id="calculator">2+4</gadget>
<output>6</output>
6 kilometers for 2 hours.

<result>6</result>