During the May Day period, the train ticket from A to B is 30 yuan more expensive than usual. It is 125% of the normal fare. How much is each train ticket on weekdays?
五一期间从A地到B地的火车票比平日贵30元．是平日票价的125%．平日每张火车票多少元？
<gadget id="calculator">125 / 100</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 / (1/4)</gadget>
<output>80</output>

<result>80</result>