A crocodile grows 8 inches long in 4 years. At this rate, how many inches will it grow in 13 years?
Crocodile grows 8/4 = 
<gadget id="calculator">8/4</gadget>
<output>2</output>
2 inches a year.
Crocodile grows 13*2 = 
<gadget id="calculator">13*2</gadget>
<output>26</output>
26 inches in 13 years.

<result>26</result>