fish tank with a length of 120cm, a width of 80cm, and a height of 96cm is filled with water, and the water surface is 4cm away from the mouth of the container. After putting a cuboid iron ball, the water will overflow 20L. It is known that the length and width of the iron ball are both 40cm. Find the iron ball How high is it?
一个长120cm，宽80cm，高96cm的鱼缸，里面盛有水，水面距离容器口4cm，放入一个长方体铁球后水会溢出20L，已知铁球的长宽都是40cm，求铁球的高是多少？
<gadget id="calculator">120 / 10</gadget>
<output>12</output>

<gadget id="calculator">80 / 10</gadget>
<output>8</output>

<gadget id="calculator">96 / 10</gadget>
<output>48/5 = around 9.6</output>

<gadget id="calculator">12 * 8 * (48/5)</gadget>
<output>4_608/5 = around 921.6</output>

<gadget id="calculator">40 / 10</gadget>
<output>4</output>

<gadget id="calculator">96 - 4</gadget>
<output>92</output>

<gadget id="calculator">92 / 10</gadget>
<output>46/5 = around 9.2</output>

<gadget id="calculator">12 * 8 * (46/5)</gadget>
<output>4_416/5 = around 883.2</output>

<gadget id="calculator">20 - (4_416/5)</gadget>
<output>-4_316/5 = around -863.2</output>

<gadget id="calculator">(4_608/5) + (-4_316/5)</gadget>
<output>292/5 = around 58.4</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">(292/5) / 16</gadget>
<output>73/20 = around 3.65</output>

<result>73/20 = around 3.65</result>