The school launched the "Hand in Hand" donation activity. The fifth and sixth grades donated a total of 6,300 yuan, and the sixth grade donated 4/5. How much is the sixth grade donation?
学校开展"手拉手"捐款活动，五、六年级共捐款6300元，六年级捐款数是五年级的(4/5)，六年级捐款多少元？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">6_300 / 9</gadget>
<output>700</output>

<gadget id="calculator">700 * 4</gadget>
<output>2_800</output>

<result>2_800</result>