Alright, let's work through 2621 times 390 step by step
2621 × 390 = 390 × (2621)
+ 390 × 1 that equals 390
+ 390 × 20 that results in 7800
+ 390 × 600 resulting in 234000
+ 390 × 2000 what gives us 780000

= 1022190
