The volume of a cuboid water tank is 200L. The bottom of this water tank is a square with a side length of 50 cm. What is the height of the water tank in cm?
一个长方体水箱的容积是200L，这个水箱的底面是一个边长为50cm的正方形，水箱的高度是多少厘米？
<gadget id="calculator">50 * 50</gadget>
<output>2_500</output>

<gadget id="calculator">1_000 / 2_500</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">200 * (2/5)</gadget>
<output>80</output>

<result>80</result>