A "Story of a Mathematician" has 192 pages, and Qingqing read 80 pages in the first 5 days. At this speed, how many days will it take to read the book completely? (Solve with ratio)
一本《数学家的故事》有192页，青青前5天看了80页，照这样的速度，看完全书还要多少天？(用比例解)
<gadget id="calculator">192 - 80</gadget>
<output>112</output>

<gadget id="calculator">80 / 5</gadget>
<output>16</output>

<gadget id="calculator">112 / 16</gadget>
<output>7</output>

<result>7</result>