Alright, let's work through 68520743 times 81197742 step by step
68520743 × 81197742 = 81197742 × (68520743)
+ 81197742 × 3 that is equal 243593226
+ 81197742 × 40 yielding 3247909680
+ 81197742 × 700 giving us 56838419400
+ 81197742 × 0000 that results in 0
+ 81197742 × 20000 that equals 1623954840000
+ 81197742 × 500000 which equals 40598871000000
+ 81197742 × 8000000 what gives us 649581936000000
+ 81197742 × 60000000 yielding 4871864520000000

= 5563729611762306
