The turnover of a trading firm in February is 3 million yuan, and according to the regulations, it has to pay urban maintenance and construction tax according to 7% of the turnover. How much is the city maintenance and construction tax that the commercial bank should pay in February?
某贸易商行二月份的营业额是300万元，按规定要按营业额的7%缴纳城市维护建设税．该商行二月份应缴纳城市维护建设税多少万元？
<gadget id="calculator">7 / 100</gadget>
<output>7/100 = around 0.07</output>

<gadget id="calculator">300 * (7/100)</gadget>
<output>21</output>

<result>21</result>