2 tractors (4/5) hours can cultivate (14/15) hectares, how many hectares per tractor per hour on average?
2台拖拉机(4/5)小时可耕地(14/15)公顷，平均每台拖拉机每小时耕地多少公顷？
<gadget id="calculator">14 / 15</gadget>
<output>14/15 = around 0.933333</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(14/15) / (4/5) / 2</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>