Alright, let's work through 68085826 times 54538543 step by step
68085826 × 54538543 = 54538543 × (68085826)
+ 54538543 × 6 producing 327231258
+ 54538543 × 20 what gives us 1090770860
+ 54538543 × 800 that is equal 43630834400
+ 54538543 × 5000 giving us 272692715000
+ 54538543 × 80000 that is equal 4363083440000
+ 54538543 × 000000 that is equal 0
+ 54538543 × 8000000 yielding 436308344000000
+ 54538543 × 60000000 giving us 3272312580000000

= 3713301748991518
