Xiaohua reads a book. He reads (1/4) of the whole book on the first day and 18 pages on the second day. How many pages do you read in a day.
小华看一本书，第一天看了全书的(1/4)，第二天看了18页，这时已看的页数和剩下的页数比是3：5，小华第一天看了多少页．
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/8) - (1/4)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">18 / (1/8)</gadget>
<output>144</output>

<gadget id="calculator">144 * (1/4)</gadget>
<output>36</output>

<result>36</result>