The original price of a park ticket is 15 yuan. After the price reduction, the number of tourists doubles and the income increases (1/5). What is the current price of the ticket?
某公园门票原价15元一张，降价后游客人数是原来的2倍，收入增加了(1/5)，门票现价为多少元？
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">15 * (6/5)</gadget>
<output>18</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<result>9</result>