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Jaber thought of writing the numbers $1$ through $100$ in a new way. In the new way he writes the numbers from $1$ to $10$ as $1, 2, 10, 11, 12, 20, 21, 22, 100, 101$ and the rest in a similar way. As one can see, no number in this way has any digit other than $0, 1$ and $2$. Jaber asks Tafhim to find the difference between the numbers $12201$ and $212$ while considered in this way. What will be the difference?



Source: BdMO



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