A and B respectively type a document of 2700 words, A averages 60 words per minute, and the time spent is B's (3/4). How long will it take B to complete the work?
甲乙两人分别打一份2700字的文件，甲平均每分钟打60个字，所花的时间是乙的(3/4)．乙花多少时间可以完成这项工作？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">2_700 / 60 / (3/4)</gadget>
<output>60</output>

<result>60</result>