A cuboid cistern is 40 meters long, 30 meters wide, and 2 meters deep. Now it has stored 40% of the water. How many cubic meters of water are there in the cistern?
一个长方体的蓄水池，长是40米，宽是30米，深是2米，现在已经蓄了40%的水，蓄水池里有多少立方米的水？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">40 * 30 * 2 * (2/5)</gadget>
<output>960</output>

<result>960</result>