The garden workers paved the lawn, the first group of 5 people paved 30 square meters, and the second group paved an average of 6.15 square meters per person. Which group spreads more per person on average? How many square meters?
园林工人铺草坪，第一小组5人铺了30平方米，第二小组平均每人铺了6.15平方米．哪个小组平均每人铺得多？多多少平方米？
<gadget id="calculator">30 / 5</gadget>
<output>6</output>

<gadget id="calculator">6.15 - 6</gadget>
<output>0.15</output>

<result>0.15</result>