Alright, let's work through 12790874 times 68189134 step by step
12790874 × 68189134 = 68189134 × (12790874)
+ 68189134 × 4 that results in 272756536
+ 68189134 × 70 which equals 4773239380
+ 68189134 × 800 which equals 54551307200
+ 68189134 × 0000 resulting in 0
+ 68189134 × 90000 that results in 6137022060000
+ 68189134 × 700000 which equals 47732393800000
+ 68189134 × 2000000 that is equal 136378268000000
+ 68189134 × 10000000 giving us 681891340000000

= 872198621163116
