After folding a rope twice in half, measure the length of the rope at this time to be 15.5 cm. What is the original length of the rope in centimeters?
将一根绳子对折两次后，量得此时绳子的长度为15.5厘米，这个绳子原来长多少厘米．
<gadget id="calculator">15.5 * 4</gadget>
<output>62</output>

<result>62</result>