Alright, let's work through 20110819 times 34204256 step by step
20110819 × 34204256 = 34204256 × (20110819)
+ 34204256 × 9 yielding 307838304
+ 34204256 × 10 giving us 342042560
+ 34204256 × 800 that equals 27363404800
+ 34204256 × 0000 resulting in 0
+ 34204256 × 10000 which equals 342042560000
+ 34204256 × 100000 producing 3420425600000
+ 34204256 × 0000000 that is equal 0
+ 34204256 × 20000000 which equals 684085120000000

= 687875601445664
