Alright, let's work through 66276041 times 63378222 step by step
66276041 × 63378222 = 63378222 × (66276041)
+ 63378222 × 1 what gives us 63378222
+ 63378222 × 40 that equals 2535128880
+ 63378222 × 000 that results in 0
+ 63378222 × 6000 giving us 380269332000
+ 63378222 × 70000 yielding 4436475540000
+ 63378222 × 200000 which equals 12675644400000
+ 63378222 × 6000000 resulting in 380269332000000
+ 63378222 × 60000000 which equals 3802693320000000

= 4200457639779102
