Mr. Li buys books for the students in the extracurricular interest group. The money he brings is just enough to buy 15 Chinese books or 24 math books. A math book?
李老师为课外兴趣小组的同学买书，他带的钱正好可以买15本语文书或24本数学书，如果李老师买了10本语文书后，剩下的钱全部买数学书，还可买几本数学书？
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/15) * 10</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(1/3) / (1/24)</gadget>
<output>8</output>

<result>8</result>