A typist needs to type a manuscript at 180 characters per minute, which can be finished in 40 minutes. If the typist needs to type 60 characters per minute, how many minutes will it take to finish typing?
打字员要打一部书稿，每分钟打180个字，40分钟可以打完，如果每分钟打60个字，那么多少分钟才能打完呢？
<gadget id="calculator">40 / 60</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">180 * (2/3)</gadget>
<output>120</output>

<result>120</result>