Alright, let's work through 8661 times 8458 step by step
8661 × 8458 = 8458 × (8661)
+ 8458 × 1 resulting in 8458
+ 8458 × 60 giving us 507480
+ 8458 × 600 that equals 5074800
+ 8458 × 8000 yielding 67664000

= 73254738
