A dining table is 1 meter long and (7/10) meters wide. How many meters is the length greater than the width?
一张餐桌长1米，宽(7/10)米．长比宽多多少米？
<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>