The fourth grade students of Huaguo Township Central Primary School helped the villagers pick peaches in the orchard. Class 4 and Class 1 picked a total of 254 kilograms. Class 4 and Class 2 were divided into 4 groups, and each group picked an average of 68 kg. Which class picks more? How many kilograms more?
花果乡中心小学四年级同学帮助村民的果园摘桃子．四1班共摘了254千克，四2班分成4个小组，平均每组摘了68千克．哪个班摘得多？多多少千克？
<gadget id="calculator">4 * 68</gadget>
<output>272</output>

<gadget id="calculator">272 - 254</gadget>
<output>18</output>

<result>18</result>