Alright, let's work through 99553821 times 99778884 step by step
99553821 × 99778884 = 99778884 × (99553821)
+ 99778884 × 1 that equals 99778884
+ 99778884 × 20 that results in 1995577680
+ 99778884 × 800 giving us 79823107200
+ 99778884 × 3000 producing 299336652000
+ 99778884 × 50000 giving us 4988944200000
+ 99778884 × 500000 resulting in 49889442000000
+ 99778884 × 9000000 what gives us 898009956000000
+ 99778884 × 90000000 what gives us 8980099560000000

= 9933369157315764
