If the bottom of a cuboid iron box is square, if you unfold its sides, you will get a square with a side length of 24 cm. If there is (2/3) tank of water in the iron box, find the area of the surface in contact with the water.
底面是正方形的长方体铁箱，如果把它的侧面展开，正好得到一个边长是24厘米的正方形．如果铁箱内装有(2/3)箱水，求与水接触的面的面积．
<gadget id="calculator">36 + 576</gadget>
<output>612</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">612 * (2/3)</gadget>
<output>408</output>

<result>408</result>