Alright, let's work through 99708120 times 51275288 step by step
99708120 × 51275288 = 51275288 × (99708120)
+ 51275288 × 0 which equals 0
+ 51275288 × 20 producing 1025505760
+ 51275288 × 100 that equals 5127528800
+ 51275288 × 8000 giving us 410202304000
+ 51275288 × 00000 that equals 0
+ 51275288 × 700000 what gives us 35892701600000
+ 51275288 × 9000000 what gives us 461477592000000
+ 51275288 × 90000000 giving us 4614775920000000

= 5112562568938560
