A self-employed individual has an annual income of 600,000 yuan. According to regulations, he has to pay 5% of the tax interest every month. How much is the tax interest paid in half a year?
某个体户，每年收入600000元，按规定，每月要缴纳5%的税利，半年缴纳税利多少元？
<gadget id="calculator">600_000 / 12</gadget>
<output>50_000</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">50_000 * (1/20) * 6</gadget>
<output>15_000</output>

<result>15_000</result>