Li Ming bought 8 ballpoint pens and 5 exercise books and spent a total of 14.3 yuan. Each ballpoint pen was 1.6 yuan. How much is each exercise book? (column equation solution)
李明买了8支圆珠笔和5本练习本共花了14.3元，每支圆珠笔1.6元，每本练习本多少钱？(列方程解答)
<gadget id="calculator">8 * 1.6</gadget>
<output>12.8</output>

<gadget id="calculator">14.3 - 12.8</gadget>
<output>1.5</output>

<gadget id="calculator">1.5 / 5</gadget>
<output>0.3</output>

<result>0.3</result>