Congcong is reading a novel. On the first day, the number of pages he has read is unread (1/5). On the second day, he reads another 6 pages. At this time, the number of pages he has read is unread (1/4), how many pages did Congcong read in total?
聪聪在看一本小说，第一天，已看的页数是未看的(1/5)，第二天，他又看了6页，这时已看了的页数是未看的(1/4)，聪聪一共看了多少页．
<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + 5</gadget>
<output>6</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/5) - (1/6)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">6 / (1/30)</gadget>
<output>180</output>

<gadget id="calculator">180 * (1/5)</gadget>
<output>36</output>

<result>36</result>