In the book corner of Class 61, the ratio of the number of science and art books to literature and art books is 5:6. After borrowing 10 science and technology books, the ratio of science and art books to literature and art books is 2:3. How many technical books are there?
六1班图书角原有科技书与文艺书本数的比是5：6，借出10本科技书后，科技书与文艺书的本数比是2：3．科技书原有多少本？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(5/6) - (2/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">10 / (1/6)</gadget>
<output>60</output>

<gadget id="calculator">60 * (5/6)</gadget>
<output>50</output>

<result>50</result>