rope is used up (3/5)m, and the rest is less than (1/10)m, what is the length of the rope in m?
一根绳子，用去(3/5)m，剩下的比用去的少(1/10)m，这根绳子长多少m．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(3/5) - (1/10)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) + (3/5)</gadget>
<output>11/10 = around 1.1</output>

<result>11/10 = around 1.1</result>