Alright, let's work through 69834558 times 77897904 step by step
69834558 × 77897904 = 77897904 × (69834558)
+ 77897904 × 8 that results in 623183232
+ 77897904 × 50 which equals 3894895200
+ 77897904 × 500 which equals 38948952000
+ 77897904 × 4000 yielding 311591616000
+ 77897904 × 30000 producing 2336937120000
+ 77897904 × 800000 what gives us 62318323200000
+ 77897904 × 9000000 giving us 701081136000000
+ 77897904 × 60000000 that results in 4673874240000000

= 5439965694966432
