In the rope skipping competition, Lili jumps 300 times with 2 points, how many times can she jump with 4 points.
跳绳比赛，丽丽2分跳300下，她跳4分，能跳多少下．
<gadget id="calculator">300 / 2</gadget>
<output>150</output>

<gadget id="calculator">150 * 4</gadget>
<output>600</output>

<result>600</result>