Xiaofang bought 2 notebooks and 5 ballpoint pens, 7.5 yuan for sharing, 0.5 yuan for each ballpoint pen, how much is each notebook?
小芳买了2本笔记本和5枝圆珠笔，共用去7.5元，每枝圆珠笔0.5元，每本笔记本多少元？
<gadget id="calculator">5 * 0.5</gadget>
<output>2.5</output>

<gadget id="calculator">7.5 - 2.5</gadget>
<output>5</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>