There is a rope with a length of 2m. Xiaogang took away (2/5) of this rope, and Xiaoli took away (2/5)m. Who took the most? How much more meters?
有一根长2m的绳子，小刚取走了这根绳子的(2/5)，小丽取走了(2/5)m，谁取走的多？多多少米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">2 * (2/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) - (2/5)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>