Alright, let's work through 53248369 times 78889215 step by step
53248369 × 78889215 = 78889215 × (53248369)
+ 78889215 × 9 that equals 710002935
+ 78889215 × 60 giving us 4733352900
+ 78889215 × 300 that equals 23666764500
+ 78889215 × 8000 yielding 631113720000
+ 78889215 × 40000 producing 3155568600000
+ 78889215 × 200000 producing 15777843000000
+ 78889215 × 3000000 that results in 236667645000000
+ 78889215 × 50000000 which equals 3944460750000000

= 4200722030440335
