Farmer Brown raises emus, large birds. His flock has a total of 60 heads and legs. How many emus are in his flock?
Each emu has 1+2=
<gadget id="calculator">1+2</gadget>
<output>3</output>
3 heads and legs.
Then the flock has 60/3=
<gadget id="calculator">60/3</gadget>
<output>20</output>
20 animals.

<result>20</result>