When Zhang Jun was doing an addition, he regarded the 9 in the ones place of the addend as 6, and the 6 in the tens place as 9, and the result "sum" was 123. What should be the correct answer?
张军在做一道加法时，把加数个位上的9看做6，把十位上的6看做9，结果"和"是123．正确的答数应该是多少？
<gadget id="calculator">123 - 30</gadget>
<output>93</output>

<gadget id="calculator">93 + 3</gadget>
<output>96</output>

<result>96</result>