A cuboid tank filled with water is 35cm long, 25cm wide, and 20cm high, and there is a piece of iron submerged in it. When the iron block is taken out, the water level drops by 5 cm, what is the volume of this iron block?
一个装满水的长方体水缸长35cm，宽25cm，高20cm，里面有一块被水浸没了的铁块．当把铁块取出后，水位下降了5cm，求这块铁块的体积是多少？
<gadget id="calculator">35 * 25 * 5</gadget>
<output>4_375</output>

<result>4_375</result>