Hu Die reads a 240-page story book. She reads (1/3) of the book on the first day and 40% of the book on the second day. How many pages are left?
胡蝶看一本240页的故事书，第一天看了这本书的(1/3)，第二天看了这本书的40%，还剩多少页没看？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/3) - (2/5)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">240 * (4/15)</gadget>
<output>64</output>

<result>64</result>