The school's environmental protection team organized waste recycling activities, and a total of 600 waste plastic bottles were recycled. Among them, the first group recycled (1/4), the second group recycled (2/5), how many more waste plastic bottles did the second group recycle than the first group?
学校环保小组搞废品回收活动，共回收了600个废塑料瓶．其中第一组回收的占(1/4)，第二组回收的占(2/5)，第二小组比第一小组多回收了多少个废塑料瓶？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/5) - (1/4)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">600 * (3/20)</gadget>
<output>90</output>

<result>90</result>