Use 6 number cards 3, 7, 0, 1, 6, 9 to form 2 three-digit numbers, what is the biggest difference?
用6张数卡3、7、0、1、6、9摆成2个三位数，最大的差是多少．
<gadget id="calculator">976 - 103</gadget>
<output>873</output>

<result>873</result>