A rectangular glass tank with a length of 12dm, a width of 8dm, a height of 6dm, and a water depth of 4.2dm. If a square iron block with a side length of 8dm is thrown in, how many liters of water will overflow in the jar?
一个长方形的玻璃缸，长12dm，宽8dm，高6dm，水深4.2dm．如果投入一块棱长为8dm的正方形铁块，缸里的水溢出多少升？
<gadget id="calculator">8 * 8 * 8</gadget>
<output>512</output>

<gadget id="calculator">12 * 8 * 4.2</gadget>
<output>403.2</output>

<gadget id="calculator">12 * 8 * 6</gadget>
<output>576</output>

<gadget id="calculator">403.2 - 576</gadget>
<output>-172.8</output>

<gadget id="calculator">512 + (-172.8)</gadget>
<output>339.2</output>

<result>339.2</result>