A column of numbers: (1/1), (2/1), (1/2), (3/1), (2/2), (1/3), (4/1), (3/2) , ..., what is the 100th number in this column.
一列数：(1/1)、(2/1)、(1/2)、(3/1)、(2/2)、(1/3)、(4/1)、(3/2)、…，这列数的第100个数是多少．
<gadget id="calculator">6 / 9</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>