Uncle Wang participated in the new rural cooperative medical insurance. The clause stipulates that: rural inpatient medical expenses shall be compensated at the deductible line, 400 yuan for county-level hospitals, and the part above the deductible line shall be compensated at 45%. This year, Uncle Wang suffered from acute appendicitis and was hospitalized for a month. The total medical expenses were 5,000 yuan. According to regulations, how much should Uncle Wang pay by himself?
王大伯参加新型农村合作医疗保险．条款规定：农村住院医疗费补偿起付线，县级医院400元，在起付线以上的部分按45%补偿．今年王大伯患急性阑尾炎住院一个月，共计医药费5000元，按规定王大伯自己应付多少元？
<gadget id="calculator">5_000 - 400</gadget>
<output>4_600</output>

<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">4_600 * (9/20)</gadget>
<output>2_070</output>

<gadget id="calculator">5_000 - 2_070</gadget>
<output>2_930</output>

<result>2_930</result>