There are 240 boys in the school, which is 60% of the total number of boys and girls. How many girls are there?
学校有男生240人，是男女生总数的60%，有女生多少人？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">240 / (3/5)</gadget>
<output>400</output>

<gadget id="calculator">400 - 240</gadget>
<output>160</output>

<result>160</result>