Teacher Li is 34 years old this year, and the three children are 9, 10, and 11 years old. After a few years, Teacher Li's age will be equal to the sum of the ages of the three children?
李老师今年34岁，3个小朋友分别是9、10、11岁，几年后李老师的年龄等于3个小朋友的年龄之和？
<gadget id="calculator">34 - 9 - 10 - 11</gadget>
<output>4</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<result>2</result>