Dad parked the car in the social parking lot from 14:00 to 22:00 one day. According to regulations, from 9:00 to 20:00, the charge is 5 yuan per hour; from 20:00 to 9:00 the next day, the charge is 3 yuan per hour. How much does Dad have to pay for parking in total?
爸爸某一天将车从14时到22时停在社会停车场．按规定从9时到20时，每小时收费5元；从20时到次日9时，每小时收费3元．爸爸一共要付停车费多少元？
<gadget id="calculator">20 - 14</gadget>
<output>6</output>

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">22 - 20</gadget>
<output>2</output>

<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">30 + 6</gadget>
<output>36</output>

<result>36</result>