The length of a rope is equal to its (3/5) plus (3/5) meters, how many meters is the length of the rope.
一根绳子的长度等于它的(3/5)加上(3/5)米，这根绳子长多少米．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/5) / (2/5)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>