Xiao Ming is 14 years old this year, and his grandmother is 62 years old. After many years, his grandmother will be three times as old as Xiao Ming.
小明今年14岁，奶奶62岁，那么多少年后，奶奶的年龄是小明的3倍．
<gadget id="calculator">3 * 14</gadget>
<output>42</output>

<gadget id="calculator">62 - 42</gadget>
<output>20</output>

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

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<result>10</result>