Alright, let's work through 63399557 times 47615295 step by step
63399557 × 47615295 = 47615295 × (63399557)
+ 47615295 × 7 yielding 333307065
+ 47615295 × 50 resulting in 2380764750
+ 47615295 × 500 which equals 23807647500
+ 47615295 × 9000 that results in 428537655000
+ 47615295 × 90000 that results in 4285376550000
+ 47615295 × 300000 which equals 14284588500000
+ 47615295 × 3000000 that results in 142845885000000
+ 47615295 × 60000000 which equals 2856917700000000

= 3018788609424315
