A piece of cuboid wood has a volume of 0.36m**3 and a cross section of 40dm**2. What is the length of this piece of wood in m?
一段长方体木料，体积是0.36m**3，横截面是40dm**2，这段木料的长是多少m．
<gadget id="calculator">0.36 / 0.4</gadget>
<output>0.9</output>

<result>0.9</result>