Alright, let's work through 8261 times 2621 step by step
8261 × 2621 = 2621 × (8261)
+ 2621 × 1 giving us 2621
+ 2621 × 60 what gives us 157260
+ 2621 × 200 what gives us 524200
+ 2621 × 8000 resulting in 20968000

= 21652081
