When Congcong was doing the problem of adding two digits to two digits, he mistakenly regarded one of the 9s on the tens digit as 6, and the sum was 104. What should be the correct sum?
聪聪在做两位数加两位数的题时，把其中一个加数十位上的9错看成6，和是104．正确的和应该是多少？
<gadget id="calculator">90 - 60</gadget>
<output>30</output>

<gadget id="calculator">104 + 30</gadget>
<output>134</output>

<result>134</result>