Alright, let's work through 66650093 times 78107386 step by step
66650093 × 78107386 = 78107386 × (66650093)
+ 78107386 × 3 that equals 234322158
+ 78107386 × 90 producing 7029664740
+ 78107386 × 000 what gives us 0
+ 78107386 × 0000 which equals 0
+ 78107386 × 50000 giving us 3905369300000
+ 78107386 × 600000 what gives us 46864431600000
+ 78107386 × 6000000 producing 468644316000000
+ 78107386 × 60000000 producing 4686443160000000

= 5205864540886898
