Alright, let's work through 2420 times 3390 step by step
2420 × 3390 = 3390 × (2420)
+ 3390 × 0 that results in 0
+ 3390 × 20 yielding 67800
+ 3390 × 400 which equals 1356000
+ 3390 × 2000 which equals 6780000

= 8203800
