The passing rate of eyesight of students in the first semester of a middle school in a certain city is 80%. After being corrected by the hospital this semester, the eyesight of 48 people has reached the qualified requirements, raising the pass rate to 88%. How many people are still unqualified this semester?
某市一中上学期学生视力的合格率为80%．经医院矫正本学期又有48人的视力达到合格要求，使合格率上升到88%，这个学期不合格的人还有多少人？
<gadget id="calculator">88 / 100</gadget>
<output>22/25 = around 0.88</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(22/25) - (4/5)</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">48 / (2/25)</gadget>
<output>600</output>

<gadget id="calculator">1 - (22/25)</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">600 * (3/25)</gadget>
<output>72</output>

<result>72</result>