Use the number cards 1, 3, 5, 6, 7, and 8 to form two three-digit numbers, and find the largest and smallest differences.
用数卡1、3、5、6、7、8摆出两个三位数，求出最大的差和最小的差．
<gadget id="calculator">876 - 135</gadget>
<output>741</output>

<result>741</result>