When Naughty is doing a subtraction calculation problem, he regards the 6 in the tens digit of the subtrahend as 9, and the 9 in the subtrahend ones digit as 6, and the final result is 133. What is the correct result of this problem? ．
淘气在做一道减法计算题时，把被减数十位上的6看成9，把减数个位上的9看成6，最后得到的结果是133，那么这道题的正确结果是多少．
<gadget id="calculator">90 - 60</gadget>
<output>30</output>

<gadget id="calculator">9 - 6</gadget>
<output>3</output>

<gadget id="calculator">133 - 30 - 3</gadget>
<output>100</output>

<result>100</result>