For a 240-page book, Xiaohong read 20% on the first day and 30% on the second day. How many pages did she read in two days?
一本240页的书，小红第一天看了20%，第二天看了30%，两天一共看了多少页？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(1/5) + (3/10)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">240 * (1/2)</gadget>
<output>120</output>

<result>120</result>