cylindrical container is filled with 54 liters of water. If a conical iron block whose bottom surface is the same size as the inner bottom surface of the cylindrical container and whose height is the same as the height of the cylindrical container is put into the cylindrical container and completely submerged in water, then the cylindrical container How many liters of water are left in it.
一个圆柱形容器，盛满水是54升，如果把一个底面与圆柱容器内底面大小一样，高与圆柱容器内的高一样的圆锥铁块放入圆柱容器内完全浸没于水中，这时圆柱容器内还剩水多少升．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">54 * (2/3)</gadget>
<output>36</output>

<result>36</result>