After cutting a cuboid wood with a length of 8dm into two sections, the surface area is 30cm**2. What is the volume of this wood in dm**2?
把一根长8dm的长方体木料，横截成2段后，表面积了30cm**2，原来这根木料的体积是多少dm**2．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) / 2</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">(3/20) * 8</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>