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Hi;
The last follows the definition given above.
I found the instructions for the Sam Loyd  Columbus problem vague and misleading. The drawing shows the dots as being at the midheight of the numbers, not at the bottom as if they were decimals. In your instructions you represent the dots where you find them if they were used as decimals. Further, in your solution you use the dots to represent repeating digits. When I went to school we were taught to use a horizontal bar for this purpose. If you are going to use nonstandard, or obsolete, rules for notation, it would be nice if you specified what they were. 