There are 240 students in the sixth grade of the experimental primary school, and the number of girls accounts for 55% of the whole grade. How many boys are there in the sixth grade?
实验小学六年级有240人，女生人数占全年级人数的55%，六年级男生有多少人？
<gadget id="calculator">55 / 100</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">1 - (11/20)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">240 * (9/20)</gadget>
<output>108</output>

<result>108</result>