A rope is 25 meters long, 18% of the total length is cut off for the first time, and 22% of the total length is cut before the second time, how many meters are left?
一根绳子长25米，第一次剪去全长的18%，第二次前剪去全长的22%，还有多少米？
<gadget id="calculator">18 / 100</gadget>
<output>9/50 = around 0.18</output>

<gadget id="calculator">22 / 100</gadget>
<output>11/50 = around 0.22</output>

<gadget id="calculator">1 - (9/50) - (11/50)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">25 * (3/5)</gadget>
<output>15</output>

<result>15</result>