Alright, let's work through 78407763 times 18740736 step by step
78407763 × 18740736 = 18740736 × (78407763)
+ 18740736 × 3 resulting in 56222208
+ 18740736 × 60 resulting in 1124444160
+ 18740736 × 700 producing 13118515200
+ 18740736 × 7000 resulting in 131185152000
+ 18740736 × 00000 that results in 0
+ 18740736 × 400000 giving us 7496294400000
+ 18740736 × 8000000 resulting in 149925888000000
+ 18740736 × 70000000 resulting in 1311851520000000

= 1469419186733568
