Solve Complex Expression: 1-(4·13·7÷(2/26)-13·13·7·4)

To solve this problem, we'll follow these steps:

• Step 1: Solve the division inside the parentheses: $7 : \frac{2}{26}$ is equivalent to $7 \times \frac{26}{2}$.
• Step 2: Calculate $\frac{26}{2} = 13$.
• Step 3: Thus, $7 \times 13 = 91$.
• Step 4: Determine the full product expression: $4 \cdot 13 \cdot 91$.
• Step 5: $4 \cdot 13 = 52$.
• Step 6: Therefore, $52 \cdot 91 = 4732$.
• Step 7: Compute the second product: $13 \cdot 13 \cdot 7 \cdot 4$.
• Step 8: Begin with $13 \cdot 13 = 169$.
• Step 9: Continue with $169 \cdot 7 = 1183$.
• Step 10: Finally, $1183 \cdot 4 = 4732$.
• Step 11: Subtract the two calculated products: $4732 - 4732 = 0$.
• Step 12: Subtract this result from 1, yielding $1 - 0 = 1$.

Therefore, the solution to the problem is $1$.