schoolbag is 60 yuan, and (1/2) the price of the schoolbag is 5 yuan more than twice the price of a pencil case. How much does a pencil case cost? (Solution of column equation)
一只书包60元，书包价格的(1/2)比一个铅笔盒售价的2倍还多5元．一个铅笔盒售价多少元？(列方程解)
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">60 * (1/2)</gadget>
<output>30</output>

<gadget id="calculator">30 - 5</gadget>
<output>25</output>

<gadget id="calculator">25 / 2</gadget>
<output>25/2 = around 12.5</output>

<result>25/2 = around 12.5</result>