Alright, let's work through 3620 times 1811 step by step
3620 × 1811 = 1811 × (3620)
+ 1811 × 0 that is equal 0
+ 1811 × 20 yielding 36220
+ 1811 × 600 resulting in 1086600
+ 1811 × 3000 what gives us 5433000

= 6555820
