Alright, let's work through 99136450 times 84919974 step by step
99136450 × 84919974 = 84919974 × (99136450)
+ 84919974 × 0 giving us 0
+ 84919974 × 50 yielding 4245998700
+ 84919974 × 400 yielding 33967989600
+ 84919974 × 6000 resulting in 509519844000
+ 84919974 × 30000 yielding 2547599220000
+ 84919974 × 100000 yielding 8491997400000
+ 84919974 × 9000000 that results in 764279766000000
+ 84919974 × 90000000 giving us 7642797660000000

= 8418664756452300
