Alright, let's work through 3623 times 7020 step by step
3623 × 7020 = 7020 × (3623)
+ 7020 × 3 giving us 21060
+ 7020 × 20 that is equal 140400
+ 7020 × 600 producing 4212000
+ 7020 × 3000 giving us 21060000

= 25433460
