Alright, let's work through 78082074 times 335389 step by step
78082074 × 335389 = 335389 × (78082074)
+ 335389 × 4 that equals 1341556
+ 335389 × 70 that results in 23477230
+ 335389 × 000 that results in 0
+ 335389 × 2000 that equals 670778000
+ 335389 × 80000 yielding 26831120000
+ 335389 × 000000 that results in 0
+ 335389 × 8000000 that equals 2683112000000
+ 335389 × 70000000 producing 23477230000000

= 26187868716786
