The length of a rope is (4/15) meters, what is the length of the rope after being folded twice?
一根绳子长度为(4/15)米，对折两次后的绳子长多少米．
<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(4/15) / 4</gadget>
<output>1/15 = around 0.066667</output>

<result>1/15 = around 0.066667</result>