Ding Yunhai took 10 yuan to the school supermarket to buy stationery. Each pencil was 1.2 yuan, each exercise book was 0.5 yuan, and each piece of colored paper was 0.2 yuan. He bought 5 pencils, and the remaining money was used to buy colored paper. A piece of colored paper?
丁云海同学带10元钱去学校超市买文具，每支铅笔1.2元，每本练习本0.5元，每张彩纸0.2元，他买了5支铅笔，剩下的钱买彩纸，还可以买几张彩纸？
<gadget id="calculator">1.2 * 5</gadget>
<output>6</output>

<gadget id="calculator">10 - 6</gadget>
<output>4</output>

<gadget id="calculator">4 / 0.2</gadget>
<output>20</output>

<result>20</result>