Teacher Li buys 30 pencils and 25 pens for 103 yuan, each pen is 3.4 yuan, how much is each pencil? (solution by equation)
李老师用103元买30枝铅笔，25枝钢笔，每枝钢笔3.4元，铅笔每枝多少元？(用方程解)
<gadget id="calculator">3.4 * 25</gadget>
<output>85</output>

<gadget id="calculator">103 - 85</gadget>
<output>18</output>

<gadget id="calculator">18 / 30</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>