Boys in a class account for 55% of the class, 66% of the class participate in mathematics interest groups, of which 72% of boys participate, what percentage of the total number of girls do not participate in the class?
一个班男生占全班人数的55%，全班人数的66%的人数参加数学兴趣小组，其中男生有72%参加，女生没有参加的占全班总人数的百分之几？
<gadget id="calculator">55 / 100</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">100 * (11/20)</gadget>
<output>55</output>

<gadget id="calculator">100 - 55</gadget>
<output>45</output>

<gadget id="calculator">66 / 100</gadget>
<output>33/50 = around 0.66</output>

<gadget id="calculator">100 * (33/50)</gadget>
<output>66</output>

<gadget id="calculator">72 / 100</gadget>
<output>18/25 = around 0.72</output>

<gadget id="calculator">55 * (18/25)</gadget>
<output>198/5 = around 39.6</output>

<gadget id="calculator">66 - (198/5)</gadget>
<output>132/5 = around 26.4</output>

<gadget id="calculator">45 - (132/5)</gadget>
<output>93/5 = around 18.6</output>

<gadget id="calculator">(93/5) / 100</gadget>
<output>93/500 = around 0.186</output>

<result>93/500 = around 0.186</result>