Alright, let's work through 20384885 times 51419048 step by step
20384885 × 51419048 = 51419048 × (20384885)
+ 51419048 × 5 producing 257095240
+ 51419048 × 80 that is equal 4113523840
+ 51419048 × 800 that is equal 41135238400
+ 51419048 × 4000 which equals 205676192000
+ 51419048 × 80000 that results in 4113523840000
+ 51419048 × 300000 that equals 15425714400000
+ 51419048 × 0000000 resulting in 0
+ 51419048 × 20000000 giving us 1028380960000000

= 1048171380289480
