Five times Xiao Ming's age plus 3 is the age of grandpa. Grandpa is 63 years old this year. How old is Xiao Ming?
小明年龄的5倍再加3就是爷爷的年龄，爷爷今年63岁，小明今年几岁？
<gadget id="calculator">63 - 3</gadget>
<output>60</output>

<gadget id="calculator">60 / 5</gadget>
<output>12</output>

<result>12</result>