One tractor can plow (5/8) hectares of land in 2 hours. According to this calculation, how many hectares can be plowed by 3 tractors (4/5) hours.
一台拖拉机2小时耕地(5/8)公顷，照这样计算，3台拖拉机(4/5)小时能耕地多少公顷．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(5/8) / 2</gadget>
<output>5/16 = around 0.3125</output>

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

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

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