A rectangular block of wood is 8 cm long, 4 cm wide, and 5 cm high. If it is sawn into a largest cube, how many percent will its volume be reduced?
一个长方体木块长8cm，宽4厘米，高5cm，如果用它锯成一个最大的正方体，体积比原来减少百分之几？
<gadget id="calculator">160 - 96</gadget>
<output>64</output>

<gadget id="calculator">64 / 160</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>