Alright, let's work through 63943568 times 63262228 step by step
63943568 × 63262228 = 63262228 × (63943568)
+ 63262228 × 8 yielding 506097824
+ 63262228 × 60 that results in 3795733680
+ 63262228 × 500 yielding 31631114000
+ 63262228 × 3000 producing 189786684000
+ 63262228 × 40000 that equals 2530489120000
+ 63262228 × 900000 which equals 56936005200000
+ 63262228 × 3000000 giving us 189786684000000
+ 63262228 × 60000000 producing 3795733680000000

= 4045212577949504
