As a child, Bobby was able to jump rope 30 times per minute. Now that he is an adult, he can jump 1 jump per second. How many more jumps than when he was a child is Bobby able to jump now that he is an adult?
Now that he is an adult, Bobby can jump 60 * 1 = 
<gadget id="calculator">60*1</gadget>
<output>60</output>
60 jumps per minute.
Bobby can jump 60 - 30 = 
<gadget id="calculator">60-30</gadget>
<output>30</output>
30 more jumps than when he was a child.

<result>30</result>