Alright, let's work through 29639967 times 7279145 step by step
29639967 × 7279145 = 7279145 × (29639967)
+ 7279145 × 7 that equals 50954015
+ 7279145 × 60 resulting in 436748700
+ 7279145 × 900 resulting in 6551230500
+ 7279145 × 9000 giving us 65512305000
+ 7279145 × 30000 what gives us 218374350000
+ 7279145 × 600000 giving us 4367487000000
+ 7279145 × 9000000 giving us 65512305000000
+ 7279145 × 20000000 yielding 145582900000000

= 215753617588215
