The charging standard of Weimin parking lot is: within 3 hours (including 3 hours), the parking fee is 5 yuan. More than 3 hours, 1.5 yuan per hour (less than 1 hour is calculated as 1 hour). A car parked in this parking lot for 8 hours and 15 minutes. How much does the owner need to pay for parking?
为民停车场的收费标准是：3小时以内(含3小时)，收停车费5元．超过3小时，每小时收1.5元(不足1小时按1小时计算)．有一辆轿车在这个停车场停了8小时15分．车主需要付停车费多少元？
<gadget id="calculator">9 - 3</gadget>
<output>6</output>

<gadget id="calculator">1.5 * 6</gadget>
<output>9</output>

<gadget id="calculator">5 + 9</gadget>
<output>14</output>

<result>14</result>