Alright, let's work through 8221555 times 9879624 step by step
8221555 × 9879624 = 9879624 × (8221555)
+ 9879624 × 5 giving us 49398120
+ 9879624 × 50 giving us 493981200
+ 9879624 × 500 resulting in 4939812000
+ 9879624 × 1000 resulting in 9879624000
+ 9879624 × 20000 yielding 197592480000
+ 9879624 × 200000 yielding 1975924800000
+ 9879624 × 8000000 resulting in 79036992000000

= 81225872095320
