(16 × 10⁻²)² × (13 × 10⁴) = 16² × (10⁻²)² × 13 × 10⁴ = 256 × 10⁻⁴ × 13 × 10⁴ = 256 × 13 × 10⁻⁴ × 10⁴ = 3328 × 10⁰ = 3328.
Ответ: 3328