The implementation rules of the "New Rural Medical Insurance" in a certain city stipulates that: when hospitalized in a designated medical institution in the city, the minimum payment is 300 yuan each time, and 65% of the part above 300 yuan will be compensated, of which the medical expenses are within the compensation range of the "New Rural Medical Insurance" In July 2012, Grandma Zhang was hospitalized in a traditional Chinese medicine hospital due to diabetes and spent a total of 12,800 yuan on medical expenses, including 6,800 yuan on Chinese herbal medicines that were within the compensation range of the "New Rural Medical Cooperation". How much does Grandma Zhang have to pay for this hospitalization?
某市"新农合"实施细则规定：在本市定点医疗机构住院，每次起付钱300元，300元以上的部分按65%进行补偿，其中医药费中"新农合"补偿范围内的中草药费按70%进行补偿.2012年7月，张奶奶因糖尿病在中医院住院，共花去医药费12,800元，其中符合"新农合"补偿范围内的中草药费共6,800元．张奶奶这次住院自己要支付多少钱？
<gadget id="calculator">12_800 - 300 - 6_800</gadget>
<output>5_700</output>

<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">5_700 * (13/20)</gadget>
<output>3_705</output>

<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">6_800 * (7/10)</gadget>
<output>4_760</output>

<gadget id="calculator">3_705 + 4_760</gadget>
<output>8_465</output>

<gadget id="calculator">12_800 - 8_465</gadget>
<output>4_335</output>

<result>4_335</result>