A cuboid glass tank is 9 decimeters long, 7 decimeters wide, 5 decimeters high, and 3.8 decimeters deep. If a cube iron block with a side length of 5 decimeters is put in, how many liters of water will overflow in the tank?
一个长方体的玻璃缸，长9分米，宽7分米，高5分米，水深3.8分米，如果投入一块棱长5分米的正方体铁块，缸里水溢出多少升？
<gadget id="calculator">5 * 5 * 5</gadget>
<output>125</output>

<gadget id="calculator">9 * 7 * 3.8</gadget>
<output>239.4</output>

<gadget id="calculator">9 * 7 * 5</gadget>
<output>315</output>

<gadget id="calculator">239.4 - 315</gadget>
<output>-75.6</output>

<gadget id="calculator">125 + (-75.6)</gadget>
<output>49.4</output>

<result>49.4</result>