Xiao Li carries 35 kilograms of luggage on a business trip from Changsha to Thailand via Guangzhou. According to civil aviation regulations, passengers can carry up to 20 kilograms of luggage free of charge. The overweight part of the checked baggage fee is calculated according to the following formula: Airline fare * 0.2% * overweight part Kilograms. Now Xiao Li pays 33.6 yuan for checked luggage by plane from Changsha to Guangzhou, so how much is the air fare from Changsha to Guangzhou?
小李携带35千克行李从长沙乘飞机经广州到泰国出差，按民航规定，旅客最多可免费携带20千克行李，超重部分的行李托运费按如下公式计算：飞机票价*0.2%*超重部分的千克数．现在小李从长沙乘飞机到广州支付了33.6元行李托运费，则从长沙到广州的飞机票价是多少元．
<gadget id="calculator">0.2 / 100</gadget>
<output>0.002</output>

<gadget id="calculator">0.002 * 35</gadget>
<output>0.07</output>

<gadget id="calculator">0.002 * 20</gadget>
<output>0.04</output>

<gadget id="calculator">0.07 - 0.04</gadget>
<output>0.03</output>

<gadget id="calculator">33.6 / 0.03</gadget>
<output>1_120</output>

<result>1_120</result>