Zhang Qiang bought 8 exercise books and 5 pencils for a total of 13.6 yuan, 1.2 yuan for each exercise book, how much is each pencil? (column equation calculation)
张强买了8个练习本和5只铅笔，一共用去13.6元，每本练习本1.2元，每只铅笔多少元？(列方程计算)
<gadget id="calculator">8 * 1.2</gadget>
<output>9.6</output>

<gadget id="calculator">13.6 - 9.6</gadget>
<output>4</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>