When Xiao Wei calculated two-digit addition, he mistook the 6 in the ones digit of one addend as 9, and the 7 in the tens digit of the other addition as 1, and the resulting sum was 243. What should be the correct answer to this question?
小炜在计算两位数加法时，把一个加数个位上的6错误的看成了9，把另一个加数十位上的7错误地看成了1，结果所得的和是243，这道题的正确答案应该是多少？
<gadget id="calculator">243 - 3</gadget>
<output>240</output>

<gadget id="calculator">240 + 60</gadget>
<output>300</output>

<result>300</result>