The Swiss teacher Balmer successfully obtained the Balmer formula from the spectral data (9/5), (16/12), (25/21), (36/32)..., thus opening the door to the mysteries of the spectrum. According to this rule, what is the next data.
瑞士教师巴尔末成功地从光谱数据(9/5)、(16/12)、(25/21)、(36/32)…中得到巴尔末公式，从而打开了光谱奥妙的大门．按这种规律接下来的一个数据是多少．
<gadget id="calculator">7 ** 2</gadget>
<output>49</output>

<gadget id="calculator">49 - 4</gadget>
<output>45</output>

<gadget id="calculator">49 / 45</gadget>
<output>49/45 = around 1.088889</output>

<result>49/45 = around 1.088889</result>