Fill in the numbers according to the law: 1, (2/3), (5/8), (13/21), (34/55), how many.
按规律填数：1，(2/3)，(5/8)，(13/21)，(34/55)，多少．
<gadget id="calculator">34 + 55</gadget>
<output>89</output>

<gadget id="calculator">89 + 55</gadget>
<output>144</output>

<gadget id="calculator">89 / 144</gadget>
<output>89/144 = around 0.618056</output>

<result>89/144 = around 0.618056</result>