A tractor plows a piece of land, and (1/2) hour has already plowed (3/8) of this piece of land. How many hours will it take to plow all of this piece of land like this?
拖拉机耕一块地，(1/2)小时已耕了这块地的(3/8)，照这样全部耕完这块地还需要多少小时．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

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

<gadget id="calculator">(3/8) / (1/2)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(5/8) / (3/4)</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>