Two classes in the third grade planted trees. The first class completed (3/8) of the total number of trees planted, and the second class completed (5/8), which class completed more? How much more?
三年级两个班植树．一班完成了植树总棵数的(3/8)，二班完成了(5/8)，哪个班完成的多？多几分之几？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(5/8) - (3/8)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>