The last day of the college entrance examination this year is the Dragon Boat Festival. People like to use "cake rice dumpling" as a good omen. How much is a rice dumpling expensive?
今年高考最后一天是端午，人们都爱用"糕粽"取好兆头，"思乡粽"每千克38元，"五芳斋"粽3千克198元，那每千克"五芳斋"比"思乡粽"贵多少元？
<gadget id="calculator">198 / 3</gadget>
<output>66</output>

<gadget id="calculator">66 - 38</gadget>
<output>28</output>

<result>28</result>