Alright, let's work through 84615819 times 21999812 step by step
84615819 × 21999812 = 21999812 × (84615819)
+ 21999812 × 9 yielding 197998308
+ 21999812 × 10 yielding 219998120
+ 21999812 × 800 giving us 17599849600
+ 21999812 × 5000 resulting in 109999060000
+ 21999812 × 10000 what gives us 219998120000
+ 21999812 × 600000 which equals 13199887200000
+ 21999812 × 4000000 what gives us 87999248000000
+ 21999812 × 80000000 that equals 1759984960000000

= 1861532110226028
