Xiao Chen reads a 180-page book, reads 40% of the whole book in the first week, and reads 25% of the whole book in the second week. How many pages are read in two weeks?
小陈看一本180页的书，第一周看了全书的40%，第二周看了全书的25%，两周共看书多少页？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/5) + (1/4)</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">180 * (13/20)</gadget>
<output>117</output>

<result>117</result>