There are 200 books in the book corner of a certain class of red scarves. After lent out a batch, the original books (1/4) are still left. How many books are borrowed?
某班红领巾图书角有图书200本，借出一批后还剩原有图书的(1/4)，借出图书有多少本？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">200 * (3/4)</gadget>
<output>150</output>

<result>150</result>