cuboid container with a length of 50 cm, a width of 40 cm, and a depth of 30 cm contains water at a depth of 15 cm. If a cube of iron with a side length of 10 cm is placed in the water, what is the current depth of the water in cm?
一个长50厘米、宽40厘米、深30厘米的长方体容器中装有15厘米深的水，如果在水中放入一块棱长为10厘米的正方体铁块，现在的水深是多少厘米？
<gadget id="calculator">10 * 10 * 10</gadget>
<output>1_000</output>

<gadget id="calculator">50 * 40</gadget>
<output>2_000</output>

<gadget id="calculator">1_000 / 2_000</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) + 15</gadget>
<output>31/2 = around 15.5</output>

<result>31/2 = around 15.5</result>