Put a piece of iron with a side length of 12 cm into a cuboid container with a length of 36 cm and a width of 24 cm, and the measured water depth is 45 cm. If the iron block is taken out of the water, what is the height of the water in the container?
把一块棱长是12cm的正方体的铁块放入一个长36cm，宽24cm的长方体容器内，这时测得的水深为45cm．如果把这个铁块从水中取出，容器内的水面高是多少cm呢？
<gadget id="calculator">36 * 24</gadget>
<output>864</output>

<gadget id="calculator">12 / 864</gadget>
<output>1/72 = around 0.013889</output>

<gadget id="calculator">12 * 12 * (1/72)</gadget>
<output>2</output>

<gadget id="calculator">45 - 2</gadget>
<output>43</output>

<result>43</result>