Alright, let's work through 20380844 times 45128779 step by step
20380844 × 45128779 = 45128779 × (20380844)
+ 45128779 × 4 yielding 180515116
+ 45128779 × 40 giving us 1805151160
+ 45128779 × 800 that is equal 36103023200
+ 45128779 × 0000 that results in 0
+ 45128779 × 80000 which equals 3610302320000
+ 45128779 × 300000 yielding 13538633700000
+ 45128779 × 0000000 which equals 0
+ 45128779 × 20000000 producing 902575580000000

= 919762604709476
