It is hoped that 35% of boys in the sixth grade of elementary school like football, and 20% of boys like basketball. There are 27 more boys who like football than basketball. How many boys do you hope there are in the sixth grade?
希望小学六年级男生中喜欢足球运动的占男生人数的35%，喜欢篮球运动的占男生人数的20%，喜欢足球运动的男生比喜欢篮球运动的多27人．希望小学六年级男生共有多少人？
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(7/20) - (1/5)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">27 / (3/20)</gadget>
<output>180</output>

<result>180</result>