It took Xiaoxiao 4 minutes to tell a story, with an average of 120 words per minute. If it takes 3 minutes to finish, how many words should be told per minute?
笑笑讲一个故事用了4分钟，平均每分讲120字，如果要3分钟完成，每分应讲多少字？
<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<gadget id="calculator">4 * 40</gadget>
<output>160</output>

<result>160</result>