A cylindrical piece of wood is made into the largest cone, and the mass is reduced by 480 grams. What is the mass of the original piece of wood in grams?
一个圆柱形木料做成一个最大的圆锥体，质量减少了480克，原来这块木料的质量是多少克．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">480 / (2/3)</gadget>
<output>720</output>

<result>720</result>