To solve the expression \( 354 \times 452 + 708 \times 274 \), we can first calculate each part separately.

1. **Calculating \( 354 \times 452 \):**

\[
354 \times 452 = 160,428
\]

2. **Calculating \( 708 \times 274 \):**

\[
708 \times 274 = 194,532
\]

3. **Adding both results together:**

\[
160,428 + 194,532 = 354,960
\]

Thus, the final result of the expression \( 354 \times 452 + 708 \times 274 \) is:

\[
\boxed{354960}
\]