Alright, let's work through 20754411 times 63842362 step by step
20754411 × 63842362 = 63842362 × (20754411)
+ 63842362 × 1 yielding 63842362
+ 63842362 × 10 resulting in 638423620
+ 63842362 × 400 that results in 25536944800
+ 63842362 × 4000 that results in 255369448000
+ 63842362 × 50000 that equals 3192118100000
+ 63842362 × 700000 which equals 44689653400000
+ 63842362 × 0000000 that results in 0
+ 63842362 × 20000000 what gives us 1276847240000000

= 1325010620158782
