book has 320 pages. Xiao Ming reads 1/8 of the whole book on the first day and 20% of the whole book on the second day. How many pages are left?
一本书有320页，小明第一天读全书的(1/8)，第二天读全书的20%，还剩多少页？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/8) - (1/5)</gadget>
<output>27/40 = around 0.675</output>

<gadget id="calculator">320 * (27/40)</gadget>
<output>216</output>

<result>216</result>