In the love donation activity for Yushu, the amount of money donated by the fifth grade students of Experimental Primary School is that of the sixth grade (4/5). The two grades donated a total of 4,500 yuan. How much is the donation for the sixth grade?
为玉树爱心捐款活动中，实验小学五年级学生捐款钱数是六年级的(4/5)．两个年级一共捐款4500元，六年级捐款多少元？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">4_500 / (9/5)</gadget>
<output>2_500</output>

<result>2_500</result>