A rope is (9/10) meters long, what is the total length of 2 such ropes in meters?
一根绳子长(9/10)米，2根这样的绳子共长多少米．
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(9/10) * 2</gadget>
<output>9/5 = around 1.8</output>

<result>9/5 = around 1.8</result>