There is a pool, the empty pool can be filled in 18 minutes with the water inlet pipe alone, and the full pool can be drained in 24 minutes with the drain pipe alone. Now there is 1/6 of the water in the pool. If the water inlet pipe and the water outlet pipe are opened at the same time, How long does it take to fill the pool?
有一个水池，单开进水管18分钟可注满空池，单开排水管24分钟可将满池水放尽，现在水池里已有六分之一的水，如果同时打开进水管和出水管，多长时间可注满水池？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 18</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(1/18) - (1/24)</gadget>
<output>1/72 = around 0.013889</output>

<gadget id="calculator">(5/6) / (1/72)</gadget>
<output>60</output>

<result>60</result>