If a cuboid block with a length of 70 cm, a width of 50 cm, and a height of 50 cm is cut into a cube with the largest volume, what is the volume of the cut part in cubic decimeters?
把一个长70厘米、宽50厘米、高50厘米的长方体木块削成一个体积最大的正方体，削去部分的体积是多少立方分米．
<gadget id="calculator">70 * 50 * 50</gadget>
<output>175_000</output>

<gadget id="calculator">50 * 50 * 50</gadget>
<output>125_000</output>

<gadget id="calculator">175_000 - 125_000</gadget>
<output>50_000</output>

<gadget id="calculator">50_000 / 1_000</gadget>
<output>50</output>

<result>50</result>