Fold a rope in half 3 times, measure the length of each fold is (3/10) meters, how long is the rope in meters?
把一根绳子对折3次，量得每折的长度是(3/10)米，这根绳子长多少米？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 8</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>