Guangming Primary School donated to the disaster area. The fourth grade students donated 2,500 yuan, the fifth grade donated more than the fourth grade (1/5), the sixth grade donated more than the fifth grade (9/10), how much did the sixth grade donate?
光明小学向灾区捐款，四年级同学捐款2500元，五年级比四级多捐款(1/5)，六年级是五年级捐款数的(9/10)，六年级捐款多少元？
<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">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">2_500 * (6/5) * (9/10)</gadget>
<output>2_700</output>

<result>2_700</result>