Alright, let's work through 21078448 times 85050675 step by step
21078448 × 85050675 = 85050675 × (21078448)
+ 85050675 × 8 resulting in 680405400
+ 85050675 × 40 that results in 3402027000
+ 85050675 × 400 resulting in 34020270000
+ 85050675 × 8000 producing 680405400000
+ 85050675 × 70000 yielding 5953547250000
+ 85050675 × 000000 producing 0
+ 85050675 × 1000000 yielding 85050675000000
+ 85050675 × 20000000 giving us 1701013500000000

= 1792736230352400
