The students went to the vegetable garden to pick tomatoes. The first group picked 56 kilograms, which was 7.6 kilograms more than the second group. How many kilograms did the second group pick?
同学们到菜园去摘西红柿，第一组摘了56千克，比第二组多摘了7.6千克，第二组摘了多少千克？
<gadget id="calculator">56 - 7.6</gadget>
<output>48.4</output>

<result>48.4</result>