Alright, let's work through 21648786 times 54293296 step by step
21648786 × 54293296 = 54293296 × (21648786)
+ 54293296 × 6 giving us 325759776
+ 54293296 × 80 giving us 4343463680
+ 54293296 × 700 resulting in 38005307200
+ 54293296 × 8000 which equals 434346368000
+ 54293296 × 40000 which equals 2171731840000
+ 54293296 × 600000 giving us 32575977600000
+ 54293296 × 1000000 producing 54293296000000
+ 54293296 × 20000000 which equals 1085865920000000

= 1175383946338656
