The bottom surface of a cuboid water container is a square with a side length of 60 cm. A cuboid iron block with a height of 1 meter and a side length of 15 cm stands upright in the container. At this time, the water depth in the container is 0.5 meters. If the iron column is taken out, What is the depth of water in the container in centimeters.
一个长方体盛水容器的底面是一个边长60厘米的正方形，容器里直立着一个高1米、底面边长15厘米的长方体铁块，这时容器里的水深0.5米，如果把铁柱取出，容器里的水深将是多少厘米．
<gadget id="calculator">0.5 * 1 * 100</gadget>
<output>50</output>

<gadget id="calculator">15 / 60 / 60</gadget>
<output>1/240 = around 0.004167</output>

<gadget id="calculator">1 * 100 * 15 * (1/240)</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">50 - (25/4)</gadget>
<output>175/4 = around 43.75</output>

<result>175/4 = around 43.75</result>