The fifth grade of a school donated 1,200 yuan, and the sixth grade donated 1/4 more than the fifth grade. How much did the fifth and sixth grades donate in total?
某校五年级捐款1200元，六年级比五年级多捐款(1/4)，五六年级共捐款多少元？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1_200 * (5/4)</gadget>
<output>1_500</output>

<gadget id="calculator">1_200 + 1_500</gadget>
<output>2_700</output>

<result>2_700</result>