The price of 500 grams of tea leaves is 98 yuan, and 0.05 kilograms will be given away for every 500 grams purchased. Uncle Li wants to buy 2.2 kilograms of tea leaves, how much should he pay?
茶叶500克售价98元，每买500克赠送0.05千克．李叔叔要买2.2千克茶叶，应付多少元？
<gadget id="calculator">500 / 1_000</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) + 0.05</gadget>
<output>0.55</output>

<gadget id="calculator">2.2 / 0.55</gadget>
<output>4</output>

<gadget id="calculator">4 * 98</gadget>
<output>392</output>

<result>392</result>