The Experimental Primary School donated money to the disaster area. The second grade donated 306 yuan, and the third grade donated three times that of the second grade. How much did the third grade donate in total?
实验小学为灾区捐款．二年级捐款306元，三年级的捐款是二年级的3倍，三年级一共捐款多少元？
<gadget id="calculator">306 * 3</gadget>
<output>918</output>

<result>918</result>