Uncle Li took 30 kilograms of luggage from Nanjing Lukou Airport to Tianjin by plane. According to the regulations of civil aviation, passengers can carry up to 20 kilograms of luggage for free. For each kilogram of excess weight, a luggage ticket is purchased at 1.5% of the plane fare. Uncle Wang this time It took a total of 920 yuan to take the plane. How much is his plane fare?
李叔叔带了30千克行李从南京禄口机场乘飞机去天津，按民航的规定，旅客最多可免费携带20千克行李，超重部分每千克按飞机票价的1.5%购买行李票，王叔叔此次乘飞机一共花了920元，他的飞机票价是多少元．
<gadget id="calculator">1.5 / 100</gadget>
<output>0.015</output>

<gadget id="calculator">30 * 0.015</gadget>
<output>0.45</output>

<gadget id="calculator">20 * 0.015</gadget>
<output>0.3</output>

<gadget id="calculator">0.45 - 0.3</gadget>
<output>0.15</output>

<gadget id="calculator">1 + 0.15</gadget>
<output>1.15</output>

<gadget id="calculator">920 / 1.15</gadget>
<output>800</output>

<result>800</result>