What is the difference between multiplying 409 by 3 and subtracting 920?
409乘3的积再减去920，差是多少？
<gadget id="calculator">409 * 3</gadget>
<output>1_227</output>

<gadget id="calculator">1_227 - 920</gadget>
<output>307</output>

<result>307</result>