The bottom area of a cylindrical container is 80 square decimeters, and the water depth is 5 centimeters. Now put a cuboid iron block with a length of 6 decimeters, a width of 5 decimeters, and a height of 12 decimeters. What is the depth of the water in decimeters?
一个圆柱形的容器底面积是80平方分米，水深5厘米，现在放入一块长6分米，宽5分米，高12分米的长方体铁块，现在水深多少分米．
<gadget id="calculator">80 * 0.5</gadget>
<output>40</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">80 - 30</gadget>
<output>50</output>

<gadget id="calculator">40 / 50</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>