The product sales of a factory in October are 4 million yuan. If the sales tax is 8% of the sales, how much should the sales tax be paid in October?
某工厂十月份产品销售额是400万元，如果按销售额的8%缴纳营业税，十月份应缴纳营业税多少元．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">400 * (1/20)</gadget>
<output>20</output>

<gadget id="calculator">20 * 10_000</gadget>
<output>200_000</output>

<result>200_000</result>