Alright, let's work through 21896745 times 21408453 step by step
21896745 × 21408453 = 21408453 × (21896745)
+ 21408453 × 5 that results in 107042265
+ 21408453 × 40 yielding 856338120
+ 21408453 × 700 producing 14985917100
+ 21408453 × 6000 that equals 128450718000
+ 21408453 × 90000 yielding 1926760770000
+ 21408453 × 800000 that results in 17126762400000
+ 21408453 × 1000000 yielding 21408453000000
+ 21408453 × 20000000 that is equal 428169060000000

= 468775436185485
