Xinxing School bought a batch of 800 new books, which were distributed to 27% of the sixth grade and 22% of the fifth grade. How many books are left?
新星学校买来一批新图书共800本，分给六年级27%，分给五年级22%，还剩下多少本？
<gadget id="calculator">27 / 100</gadget>
<output>27/100 = around 0.27</output>

<gadget id="calculator">22 / 100</gadget>
<output>11/50 = around 0.22</output>

<gadget id="calculator">1 - (27/100) - (11/50)</gadget>
<output>51/100 = around 0.51</output>

<gadget id="calculator">800 * (51/100)</gadget>
<output>408</output>

<result>408</result>