After the "5.12" Wenchuan earthquake, the sixth grade of Experimental Primary School donated 2,400 yuan to the disaster area. Donate 20% more than the fifth grade, how much is the fifth grade donation?
"5.12"汶川地震后，实验小学六年级向灾区捐款2400元．比五年级多捐20%，五年级捐款多少元？
<result>2_400</result>