Two tractors plow a piece of land at the same time, the big tractor plows (5/8) of this piece of land, and the small tractor plows half of the big tractor, what fraction of this piece of land is left unplowed?
两台拖拉机同时耕一块地，大拖拉机耕了这块地的(5/8)，小拖拉机耕了大拖拉机的一半，这时这块地还剩几分之几没哟耕？
<gadget id="calculator">5 / 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">(5/8) * (1/2)</gadget>
<output>5/16 = around 0.3125</output>

<gadget id="calculator">(5/8) + (5/16)</gadget>
<output>15/16 = around 0.9375</output>

<gadget id="calculator">1 - (15/16)</gadget>
<output>1/16 = around 0.0625</output>

<result>1/16 = around 0.0625</result>