Find the law and fill in the numbers: (1/2), (2/5), (3/10), (4/17), how many, (6/37).
找规律填数：(1/2)，(2/5)，(3/10)，(4/17)，多少，(6/37)．
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">17 + 9</gadget>
<output>26</output>

<gadget id="calculator">5 / 26</gadget>
<output>5/26 = around 0.192308</output>

<result>5/26 = around 0.192308</result>