When Li Ming reads a book, he reads 20% more in the second week than in the first week. He reads 12 pages in the second week. How many pages did he read in the first week?
李明看一本书，第二周比第一周多看了20%，第二周看了12页，第一周看了多少页？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">12 / (6/5)</gadget>
<output>10</output>

<result>10</result>