Alright, let's work through 78074187 times 60670867 step by step
78074187 × 60670867 = 60670867 × (78074187)
+ 60670867 × 7 that results in 424696069
+ 60670867 × 80 what gives us 4853669360
+ 60670867 × 100 giving us 6067086700
+ 60670867 × 4000 what gives us 242683468000
+ 60670867 × 70000 producing 4246960690000
+ 60670867 × 000000 that equals 0
+ 60670867 × 8000000 that results in 485366936000000
+ 60670867 × 70000000 producing 4246960690000000

= 4736828615610129
