My younger sister is 2 years old this year, and my younger brother is 18 years old. Six years later, my younger brother will be how many times older than my younger sister.
今年妹妹2岁，弟弟18岁，六年后，弟弟的年龄是妹妹多少倍．
<gadget id="calculator">18 + 6</gadget>
<output>24</output>

<gadget id="calculator">2 + 6</gadget>
<output>8</output>

<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<result>3</result>