A tractor plows a piece of land, plowing 6 hectares every day, and plowing is completed in 10 days. If 2 hectares are plowed every day, how many days will it be finished? (Using proportional knowledge and arithmetic methods, two methods to solve)
一台拖拉机耕一块地，每天耕6公顷，10天耕完．如果每天多耕2公顷，几天耕完？(用比例知识和算术方法，两种方法解答)
<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">10 / 8</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">6 * (5/4)</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>