piece of land has (15/16) hectares, and it can be plowed by 2 tractors in (5/8) hours. On average, how many hectares of land is plowed per tractor per hour?
一块地有(15/16)公顷，用2台拖拉机耕，(5/8)小时可以耕完．平均每台拖拉机每小时耕地多少公顷？
<gadget id="calculator">15 / 16</gadget>
<output>15/16 = around 0.9375</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(15/16) / 2 / (5/8)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>