When Xiaofen was doing the problem, she copied the 9 in the subtrahend into 3, and the calculated difference was 414. What is the correct number?
小芬做题时，把被减数个位上的9抄成3，这样算出的差是414，正确的得数是多少？
<gadget id="calculator">9 - 3</gadget>
<output>6</output>

<gadget id="calculator">414 + 6</gadget>
<output>420</output>

<result>420</result>