A sum of money can buy 10 Chinese books or 15 math books. Each Chinese book is 1.5 yuan more expensive than a math book. How much is this money?
一笔钱，可以买10本语文书或15本数学书．每本语文书比数学书贵1.5元，这笔钱有多少元？
<gadget id="calculator">1.5 * 10</gadget>
<output>15</output>

<gadget id="calculator">15 - 10</gadget>
<output>5</output>

<gadget id="calculator">15 / 5</gadget>
<output>3</output>

<gadget id="calculator">3 * 15</gadget>
<output>45</output>

<result>45</result>