Xinhuadu sold 305 sticks of toothpaste of a certain brand on Sunday at 12 yuan each. How much did you earn from selling toothpaste on this day?
新华都星期日售出某品牌牙膏305支，每支售12元．这一天售牙膏共收入多少元？
<gadget id="calculator">305 * 12</gadget>
<output>3_660</output>

<result>3_660</result>