Alright, let's work through 68429724 times 68144729 step by step
68429724 × 68144729 = 68144729 × (68429724)
+ 68144729 × 4 what gives us 272578916
+ 68144729 × 20 that is equal 1362894580
+ 68144729 × 700 giving us 47701310300
+ 68144729 × 9000 producing 613302561000
+ 68144729 × 20000 that is equal 1362894580000
+ 68144729 × 400000 that is equal 27257891600000
+ 68144729 × 8000000 what gives us 545157832000000
+ 68144729 × 60000000 which equals 4088683740000000

= 4663124997524796
