The engineering team completes (1/15) of the project every day. According to this speed, how many days will it take to complete the entire project.
工程队每天完成工程的(1/15)，照这样的速度，要完成全工程需要多少天．
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 / (1/15)</gadget>
<output>15</output>

<result>15</result>