Xiao Ming reads a 200-page story book. He reads (1/5) of the whole book on the first day and 35% of the whole book on the second day. How many pages are left?
小明看一本200页的故事书，第一天看了全书的(1/5)，第二天看了全书的35%，还剩多少页没有看？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">1 - (1/5) - (7/20)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">200 * (9/20)</gadget>
<output>90</output>

<result>90</result>