Divide an orchard into 4 parts on average, 3 parts of which are (9/10) hectares, what is the area of this orchard in hectares?
把一片果园平均分成4份，其中的3份是(9/10)公顷，这片果园的面积是多少公顷．
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(9/10) / 3</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 4</gadget>
<output>6/5 = around 1.2</output>

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