A cylindrical container, measured from the inside, has a base diameter of 20 cm. There is water 20 cm deep in this container. Now pour all the water into a cuboid container with a length of 40 cm and a width of 25 cm. How deep is the water in cm?
一种圆柱形容器，从里面量，底面直径20厘米．在这个容器中盛有20厘米深的水，现把水全部倒入一只长40厘米、宽25厘米的长方体容器中，水深多少厘米？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">40 * 25</gadget>
<output>1_000</output>

<gadget id="calculator">20 / 1_000</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">3.14 * 100 * (1/50)</gadget>
<output>6.28</output>

<result>6.28</result>