Class 5 and Class 3 collected tree species, the first group collected (3/4) kg, the second group collected (7/8) kg, and the third group collected less (7/12) kg than the total of the first and second groups. How many kilograms of tree species did the third group collect?
五3班同学采集树种，第一小组采集(3/4)kg，第二小组采集(7/8)kg，第三小组采集的比第一、二小组的总数少(7/12)kg，第三小组采集树种多少千克？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(7/8) - (7/12)</gadget>
<output>7/24 = around 0.291667</output>

<gadget id="calculator">(3/4) + (7/24)</gadget>
<output>25/24 = around 1.041667</output>

<result>25/24 = around 1.041667</result>