Alright, let's work through 54287123 times 20536827 step by step
54287123 × 20536827 = 20536827 × (54287123)
+ 20536827 × 3 what gives us 61610481
+ 20536827 × 20 which equals 410736540
+ 20536827 × 100 what gives us 2053682700
+ 20536827 × 7000 producing 143757789000
+ 20536827 × 80000 that equals 1642946160000
+ 20536827 × 200000 which equals 4107365400000
+ 20536827 × 4000000 that results in 82147308000000
+ 20536827 × 50000000 producing 1026841350000000

= 1114885253378721
