Alright, let's work through 67978865 times 51245992 step by step
67978865 × 51245992 = 51245992 × (67978865)
+ 51245992 × 5 that results in 256229960
+ 51245992 × 60 that results in 3074759520
+ 51245992 × 800 giving us 40996793600
+ 51245992 × 8000 giving us 409967936000
+ 51245992 × 70000 resulting in 3587219440000
+ 51245992 × 900000 which equals 46121392800000
+ 51245992 × 7000000 that equals 358721944000000
+ 51245992 × 60000000 that results in 3074759520000000

= 3483644371959080
