Start with a 6 digit number that begins with 1. Move the 1 from the hundred thousands place to the digits place. The number is now 3 times bigger than the original number. (The other digits stay exactly the same)
The first number can be expressed as
100 000 +x
The second number can be expressed as
10x +1
3(100 000 + x) = 10x +1
300 000 + 3x = 10x + 1
299 999 = 7x
42857
142857
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