Uncle Wang has contracted (9/10) hectares of land, of which (2/3) are vegetables, and (1/4) of the vegetable land is radish. How many hectares are you growing radishes on?
王大伯承包了(9/10)公顷的土地，其中(2/3)种蔬菜，蔬菜地的(1/4)种萝卜．种萝卜的面积是多少公顷？
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(9/10) * (2/3) * (1/4)</gadget>
<output>3/20 = around 0.15</output>

<result>3/20 = around 0.15</result>