The Experimental Primary School donated money to the disaster area. The second grade donated 306 yuan, and the third grade donated 265 yuan more than the second grade. How much is the total donation of the two grades?
实验小学为灾区捐款．二年级捐款306元，三年级捐款比二年级捐的多265元，两个年级一共捐款多少元？
<gadget id="calculator">306 + 265 + 306</gadget>
<output>877</output>

<result>877</result>