series of regular numbers is known: 1, (2/3), (5/8), (13/21), (34/55), ..., then what is the 8th number in this series of numbers.
已知一串有规律的数：1，(2/3)，(5/8)，(13/21)，(34/55)，…，那么这串数中第8个数是多少．
<gadget id="calculator">610 / 987</gadget>
<output>610/987 = around 0.618034</output>

<result>610/987 = around 0.618034</result>