Alright, let's work through 55640449 times 6212153 step by step
55640449 × 6212153 = 6212153 × (55640449)
+ 6212153 × 9 what gives us 55909377
+ 6212153 × 40 that equals 248486120
+ 6212153 × 400 resulting in 2484861200
+ 6212153 × 0000 that results in 0
+ 6212153 × 40000 that equals 248486120000
+ 6212153 × 600000 what gives us 3727291800000
+ 6212153 × 5000000 yielding 31060765000000
+ 6212153 × 50000000 giving us 310607650000000

= 345646982176697
