Li Hua read a story book, read (1/5) of the whole book on the first day, and (2/5) of the whole book on the second day, how much did he read the whole book in two days
李华读一本故事书，第一天读了全书的(1/5)，第二天读了全书的(2/5)，两天一共读了全书的多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/5) + (2/5)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>