Qinghe Village has 21 hectares of cotton fields, accounting for (2/3) of the whole village's cultivated land area. How many hectares is the area of cultivated land in the village?
清河村有棉田21公顷，占全村耕地面积的(2/3)．全村耕地面积是多少公顷？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">21 / (2/3)</gadget>
<output>63/2 = around 31.5</output>

<result>63/2 = around 31.5</result>