There is a series of numbers (1/1), (1/2), (2/2), (1/2), (1/3), (2/3), (3/3), (2/3) , (1/3), (1/4), (2/4), (3/4), (4/4), (3/4), (2/4), (1/4), ... , which fraction is (11/11) counting from the left in this series of numbers.
有一串数(1/1)，(1/2)，(2/2)，(1/2)，(1/3)，(2/3)，(3/3)，(2/3)，(1/3)，(1/4)，(2/4)，(3/4)，(4/4)，(3/4)，(2/4)，(1/4)，…，这串数从左开始数第多少个分数是(11/11)．
<gadget id="calculator">2 * 11</gadget>
<output>22</output>

<gadget id="calculator">22 - 1</gadget>
<output>21</output>

<gadget id="calculator">1 + 21</gadget>
<output>22</output>

<gadget id="calculator">11 / 2</gadget>
<output>11/2 = around 5.5</output>

<gadget id="calculator">22 * (11/2)</gadget>
<output>121</output>

<gadget id="calculator">121 - 10</gadget>
<output>111</output>

<result>111</result>