The money Xiaopang originally brought was just enough to buy 12 pencils, each pencil costing 1.30 yuan. Later, he bought 7 notebooks with a unit price of 1.50 yuan with the money. How much money is left?
小胖原来带来的钱正好可以买12支铅笔，每支铅笔1.30元．后来他把这些钱买了7本单价是1.50元的笔记本，还剩多少元？
<gadget id="calculator">12 * 1.3</gadget>
<output>15.6</output>

<gadget id="calculator">7 * 1.5</gadget>
<output>10.5</output>

<gadget id="calculator">15.6 - 10.5</gadget>
<output>5.1</output>

<result>5.1</result>