Xiaoya went to the stationery store to buy 2 pencils and 2 ballpoint pens, and paid a total of 10 yuan. Each pencil was 1.8 yuan, and how much was each ballpoint pen?
小亚去文具店买铅笔和圆珠笔各2支，总共付了10元，铅笔每支1.8元，圆珠笔每支多少元？
<gadget id="calculator">1.8 * 2</gadget>
<output>3.6</output>

<gadget id="calculator">10 - 3.6</gadget>
<output>6.4</output>

<gadget id="calculator">6.4 / 2</gadget>
<output>3.2</output>

<result>3.2</result>