Xiaoling bought 6 Datongxing and 9 Xiaotongxing with a unit price of 0.8 yuan; the price of Datongxing is 0.3 yuan more than that of Xiaotongxing. How much is each pass?
小玲买了6个单价为0.8元的大通行，9个小通行；大通行的钱比小通行多0.3元．每个小通行多少钱？
<gadget id="calculator">6 * 0.8</gadget>
<output>4.8</output>

<gadget id="calculator">4.8 - 0.3</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 / 9</gadget>
<output>0.5</output>

<result>0.5</result>