Alright, let's work through 81678522 times 60834053 step by step
81678522 × 60834053 = 60834053 × (81678522)
+ 60834053 × 2 that is equal 121668106
+ 60834053 × 20 what gives us 1216681060
+ 60834053 × 500 producing 30417026500
+ 60834053 × 8000 producing 486672424000
+ 60834053 × 70000 yielding 4258383710000
+ 60834053 × 600000 resulting in 36500431800000
+ 60834053 × 1000000 which equals 60834053000000
+ 60834053 × 80000000 which equals 4866724240000000

= 4968835536309666
