Uncle Wang wants to dry millet on a rectangular open space. The length of the open space is 30m and the width is 20m.
王伯伯要在一块长方形的空地上晒谷子，空地的长是30m，宽是20m，要晒的谷子体积是6m**3，谷子均匀地铺满空地后，厚度大约是多少？
<gadget id="calculator">30 * 20</gadget>
<output>600</output>

<gadget id="calculator">6 / 600</gadget>
<output>1/100 = around 0.01</output>

<result>1/100 = around 0.01</result>