After the earthquake in Yushu County, Qinghai, the students actively donated money. Two classes in the fourth grade donated an average of 325 yuan per class, and three classes in the fifth grade averaged 405 yuan per class. How much is the total donation for the two grades?
青海玉树县发生地震后，同学们都积极捐款．四年级2个班平均每班捐款325元，五年级3个班平均每班405元，两个年级一共捐款多少元？
<gadget id="calculator">325 * 2</gadget>
<output>650</output>

<gadget id="calculator">405 * 3</gadget>
<output>1_215</output>

<gadget id="calculator">650 + 1_215</gadget>
<output>1_865</output>

<result>1_865</result>