
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
The positive integers \( A, B, C, D \) each have \( k \) digits, where all digits of \( A \) are 3, all digits of \( B \) are 4, all digits of \( C \) are 6, and all digits of \( D \) are 7. The number \( E \) has \( 2k \) digits, and all its digits are 5. Compute the value of the following expression:

\[ 
E - A \cdot D - B \cdot C + 1 
\]


Present the answer in LaTex format: \boxed{Your answer}
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