A rectangular parallelepiped iron sheet with a length of 60cm and a width of 40cm is cut off at the four corners to form a rectangular parallelepiped box with a side length of 5cm. What is the volume of this box?
一块长60cm，宽40cm的长方体铁皮，在四个角剪去边长为5cm的正方形，将它压成一个无盖的长方体盒子，这个盒子的体积是多少？
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">60 - 10</gadget>
<output>50</output>

<gadget id="calculator">40 - 10</gadget>
<output>30</output>

<gadget id="calculator">50 * 30 * 5</gadget>
<output>7_500</output>

<result>7_500</result>