The students of Shengli Primary School donated money to support the disaster area. Among them, the sixth grade donated 6240 yuan, which is 1/5 more than the fifth grade. How much is the fifth grade donation?
胜利小学学生为支援灾区捐款，其中六年级捐款6240元，比五年级多捐(1/5)，五年级捐款多少元？
<gadget id="calculator">1 / 5</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">6_240 / (6/5)</gadget>
<output>5_200</output>

<result>5_200</result>