Yuhong Primary School has 340 boys and 320 girls. Chaoyang Primary School has 20% more girls than boys. If the two schools are merged, the number of boys and girls will be equal. How many girls are there in Chaoyang Primary School?
育红小学有男生340人，女生320人，朝阳小学女生人数比男生多20%，若把两校合并，则男、女生人数相等，朝阳小学女生有多少人．
<gadget id="calculator">340 - 320</gadget>
<output>20</output>

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

<gadget id="calculator">20 / (1/5)</gadget>
<output>100</output>

<result>100</result>