The students made small productions. The first grade made a total of 218 pieces, and the third grade made twice as much. How many pieces did the third grade make?
同学们制作小制作，一年级共制作218件，三年级制作的是一年级的2倍，三年级制作多少件？
<gadget id="calculator">218 * 2</gadget>
<output>436</output>

<result>436</result>