A manuscript is 3600 words, Uncle Chen typed (1/3) in 20 minutes, how many words are typed per minute on average?
一份文稿3600字，陈叔叔20分钟打了(1/3)，平均每分钟打字几个？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) / 20</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">3_600 * (1/60)</gadget>
<output>60</output>

<result>60</result>