Alright, let's work through 99958259 times 63255127 step by step
99958259 × 63255127 = 63255127 × (99958259)
+ 63255127 × 9 what gives us 569296143
+ 63255127 × 50 that results in 3162756350
+ 63255127 × 200 that equals 12651025400
+ 63255127 × 8000 yielding 506041016000
+ 63255127 × 50000 resulting in 3162756350000
+ 63255127 × 900000 resulting in 56929614300000
+ 63255127 × 9000000 resulting in 569296143000000
+ 63255127 × 90000000 giving us 5692961430000000

= 6322872367743893
