There is a series of numbers (1/1), (1/2), (2/2), (1/2), (1/3), (2/3), (3/3), (2/3) , (1/3), ... This string of numbers counts from the left, what number is (11/11).
有一串数(1/1)，(1/2)，(2/2)，(1/2)，(1/3)，(2/3)，(3/3)，(2/3)，(1/3)，…这串数从左开始数，第多少个数是(11/11)．
<gadget id="calculator">11 / 1</gadget>
<output>11</output>

<gadget id="calculator">1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 11</gadget>
<output>111</output>

<result>111</result>