Alright, let's work through 55642856 times 99020215 step by step
55642856 × 99020215 = 99020215 × (55642856)
+ 99020215 × 6 resulting in 594121290
+ 99020215 × 50 resulting in 4951010750
+ 99020215 × 800 resulting in 79216172000
+ 99020215 × 2000 resulting in 198040430000
+ 99020215 × 40000 giving us 3960808600000
+ 99020215 × 600000 which equals 59412129000000
+ 99020215 × 5000000 that equals 495101075000000
+ 99020215 × 50000000 which equals 4951010750000000

= 5509767564334040
