Grandma Wang participated in the new rural cooperative medical insurance. According to the national regulations: a deduction line has been established for the medical reimbursement of farmers in hospital. Hospitalization in designated municipal hospitals, 500 yuan or less, is paid by themselves, and some countries will reimburse 80% of the above 500 yuan. Grandma Wang spent a total of 5,500 yuan in the municipal designated hospital due to illness. According to the regulations, how much did Grandma Wang actually pay?
王奶奶参加了新农村合作医疗保险．按国家规定：农民住院医疗报销设立起付线，在市级定点医院住院治疗，500元及其以下的自己掏钱，500元以上的部分国家按80%给予报销．王奶奶因病在市级定点医院共花费5500元．按照规定，王奶奶自己实际出了多少钱？
<gadget id="calculator">5_500 - 500</gadget>
<output>5_000</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5_000 * (4/5)</gadget>
<output>4_000</output>

<gadget id="calculator">5_500 - 4_000</gadget>
<output>1_500</output>

<result>1_500</result>