There are 120 girls in the fifth grade of Guangming Primary School, 20% more than boys. How many students are there in the fifth grade?
光明小学五年级有女生120人，比男生多20%，五年级一共有学生多少人？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">120 / (6/5)</gadget>
<output>100</output>

<gadget id="calculator">120 + 100</gadget>
<output>220</output>

<result>220</result>