Applying Digit Transformation Rules

The original number is $9524367$.

We apply the transformation rules to each digit:

• Even digits have 2 added.
• Odd digits have 1 subtracted.

Let's transform each digit:

• The digit $9$ (odd) becomes $9 - 1 = 8$.
• The digit $5$ (odd) becomes $5 - 1 = 4$.
• The digit $2$ (even) becomes $2 + 2 = 4$.
• The digit $4$ (even) becomes $4 + 2 = 6$.
• The digit $3$ (odd) becomes $3 - 1 = 2$.
• The digit $6$ (even) becomes $6 + 2 = 8$.
• The digit $7$ (odd) becomes $7 - 1 = 6$.

The new number formed by these transformed digits is $8446286$.

Counting Repeating Digits in the New Number

The digits in the new number $8446286$ are analyzed for frequency:

• Digit $8$ appears 2 times.
• Digit $4$ appears 2 times.
• Digit $6$ appears 2 times.
• Digit $2$ appears 1 time.

The digits that appear more than once are $8$, $4$, and $6$.

Therefore, there are 3 digits that appear more than once in the new number.