A cuboid glass tank is 6dm in length, 5dm in width, 4dm in height, and the water depth is 3dm. If a square iron block with a side length of 4dm is thrown in, how many L will the water in the tank overflow?
一只长方体的玻璃缸，长6dm、宽5dm、高4dm，水深3dm．如果投入一块棱长4dm的正方体铁块，缸里的水溢出多少L？
<gadget id="calculator">4 * 4 * 4</gadget>
<output>64</output>

<gadget id="calculator">6 * 5 * 3</gadget>
<output>90</output>

<gadget id="calculator">6 * 5 * 4</gadget>
<output>120</output>

<gadget id="calculator">90 - 120</gadget>
<output>-30</output>

<gadget id="calculator">64 + (-30)</gadget>
<output>34</output>

<result>34</result>