Alright, let's work through 67897807 times 41421989 step by step
67897807 × 41421989 = 41421989 × (67897807)
+ 41421989 × 7 what gives us 289953923
+ 41421989 × 00 that results in 0
+ 41421989 × 800 that is equal 33137591200
+ 41421989 × 7000 that equals 289953923000
+ 41421989 × 90000 which equals 3727979010000
+ 41421989 × 800000 that is equal 33137591200000
+ 41421989 × 7000000 which equals 289953923000000
+ 41421989 × 60000000 resulting in 2485319340000000

= 2812462214678123
