Xiaohong reads a book with 40 pages. She reads (1/5) of the whole book on the first day and (3/8) of the whole book on the second day. How many pages did she read in total in two days?
小红看一本书有40页，第一天看了全书的(1/5)，第二天看了全书的(3/8)，两天一共看了多少页？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">(1/5) + (3/8)</gadget>
<output>23/40 = around 0.575</output>

<gadget id="calculator">40 * (23/40)</gadget>
<output>23</output>

<result>23</result>