For a piece of land, a large tractor can plow (1/8) of this land per hour, and a small tractor can plow it (1/12) per hour. If two tractors plow together, they can plow a fraction of this land per hour How much?
一块地，大型拖拉机每小时可以耕这块地的(1/8)，小型拖拉机每小时可以耕它的(1/12)，若两台拖拉机一起耕，每小时可以耕这块地的几分之几？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/8) + (1/12)</gadget>
<output>5/24 = around 0.208333</output>

<result>5/24 = around 0.208333</result>