The numbers 1, 2, and 3 can be used to form 6 three-digit numbers without repeating numbers. What is the sum of these 6 numbers?
用数字1，2，3可以组成6个没有重复数字的三位数，这6个数的和是多少．
<gadget id="calculator">300 + 200 + 100 + 30 + 20 + 10 + 3 + 2 + 1</gadget>
<output>666</output>

<gadget id="calculator">666 * 2</gadget>
<output>1_332</output>

<result>1_332</result>