Li San spent 72 yuan to buy two movie tickets with a 10% discount. How much is the original price of each movie ticket?
李三用了72元买了2张票明九折的电影票，每张电影票原价多少元？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">72 / (9/10) / 2</gadget>
<output>40</output>

<result>40</result>