From grades 1 to 6 of Qingqing Primary School, each grade donated an average of 405 yuan to the disaster area. How much did the school donate in total?
青青小学1到6年级，平均每个年级为灾区捐款405元，这个学校共捐款多少元？
<gadget id="calculator">405 * 6</gadget>
<output>2_430</output>

<result>2_430</result>