Grandpa told Xiaoming: "When I was your father's current age, your father's age was 3 years older than your current age." How old is your age?
爷爷告诉小明："当我在你爸爸现在的这个年龄时，你爸爸当时的年龄比你现在的年龄大了3岁．"如果爷爷、爸爸和小明三人现在的年龄和99岁，则爸爸现在的年龄是多少岁．
<gadget id="calculator">99 + 3</gadget>
<output>102</output>

<gadget id="calculator">102 / 3</gadget>
<output>34</output>

<result>34</result>