The sales of a cigarette factory in October is 10 million yuan. If the tax is 45% of the sales, how much tax should be paid in October?
一个卷烟厂十月份的销售额是1000万元，如果按销售额的45%纳税，那么十月份应该纳税多少万元？
<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1_000 * (9/20)</gadget>
<output>450</output>

<result>450</result>