Xiao Ming is in the sixth grade this year. One day the teacher said to Xiao Ming: "When I was your age, you were just 3 years old; when you grew up to my age, I was already 33 years old." How old is Xiao Ming this year?
小明今年上六年级，一天老师对小明说："当我像你这么大时，你刚3岁；当你长到我现在这么大时，我已经33岁了．"小明今年多少岁．
<gadget id="calculator">33 + 3 + 33</gadget>
<output>69</output>

<gadget id="calculator">1 + 1 + 1</gadget>
<output>3</output>

<gadget id="calculator">69 / 3</gadget>
<output>23</output>

<gadget id="calculator">3 - 23</gadget>
<output>-20</output>

<gadget id="calculator">33 + (-20)</gadget>
<output>13</output>

<result>13</result>