A rectangular iron sheet whose length and width are 120 cm and 100 cm respectively, cut off a small square with a side length of 2 cm from each of its four corners, and weld it into an iron sheet water tank without a cover. What is the approximate volume of this tank in liters?
一张长、宽分别是120厘米、100厘米的长方形铁皮，在它4个角各剪去一个边长为2厘米的小正方形，焊接成一个无盖的铁皮水箱．这个水箱容积大约是多少升？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">120 - 4</gadget>
<output>116</output>

<gadget id="calculator">100 - 4</gadget>
<output>96</output>

<gadget id="calculator">2 / 1_000</gadget>
<output>1/500 = around 0.002</output>

<gadget id="calculator">116 * 96 * (1/500)</gadget>
<output>2_784/125 = around 22.272</output>

<result>2_784/125 = around 22.272</result>