There is a cuboid block whose length is 10 decimeters, width is 5 decimeters, and height is 4 decimeters. If it is sawed into a largest cube, how much will the volume be reduced?
有一块长方体木块，它的长是10分米，宽是5分米，高是4分米．如果把它锯成一个最大的正方体，体积减少百分之几？
<gadget id="calculator">10 * 5 * 4</gadget>
<output>200</output>

<gadget id="calculator">4 * 4 * 4</gadget>
<output>64</output>

<gadget id="calculator">200 - 64</gadget>
<output>136</output>

<gadget id="calculator">136 / 200</gadget>
<output>17/25 = around 0.68</output>

<result>17/25 = around 0.68</result>