When Xiao Ming was doing an addition problem, he regarded the 6 in one digit as 0, and the 5 in another tens digit as 3. The resulting sum was 63. What is the correct sum?
小明做一道加法题时，把一个数个位上的6看作了0，把另一个数十位上的5看作了3，结果得到的和是63，正确的和是多少？
<gadget id="calculator">6 - 0</gadget>
<output>6</output>

<gadget id="calculator">50 - 30</gadget>
<output>20</output>

<gadget id="calculator">63 + 6 + 20</gadget>
<output>89</output>

<result>89</result>