The tractor (1/2) hours cultivates (2/5) hectares, according to this calculation, how many hectares are cultivated in one hour.
拖拉机(1/2)小时耕地(2/5)公顷，照这样计算，1小时耕地多少公顷．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(2/5) / (1/2)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>