A rectangular block of wood is 10 cm long, 8 cm wide, and 5 cm high. Cut the largest cube out of it, what percentage of its original volume will remain?
一个长方体的木块，长10厘米，宽8厘米，高5厘米．从中切下一块最大的正方体，剩下的体积是原来的百分之几？
<gadget id="calculator">10 * 8 * 5</gadget>
<output>400</output>

<gadget id="calculator">5 * 5 * 5</gadget>
<output>125</output>

<gadget id="calculator">400 - 125</gadget>
<output>275</output>

<gadget id="calculator">275 / 400</gadget>
<output>11/16 = around 0.6875</output>

<result>11/16 = around 0.6875</result>