Xiao Ming bought 12 exercise books and 3 pencils from the stationery store, and paid a total of 5.70 yuan. It is known that each exercise book is 0.32 yuan. How much is each pencil? (Write out the quantitative relationship first, and then calculate the formula)
小明从文具店买回12本练习本和3支铅笔，共付款5.70元，已知每本练习本是0.32元，每支铅笔多少元？(先写出数量关系式，再列式计算)
<gadget id="calculator">0.32 * 12</gadget>
<output>3.84</output>

<gadget id="calculator">5.7 - 3.84</gadget>
<output>1.86</output>

<gadget id="calculator">1.86 / 3</gadget>
<output>0.62</output>

<result>0.62</result>