Alright, let's work through 51638477 times 21612324 step by step
51638477 × 21612324 = 21612324 × (51638477)
+ 21612324 × 7 that equals 151286268
+ 21612324 × 70 that is equal 1512862680
+ 21612324 × 400 that results in 8644929600
+ 21612324 × 8000 that equals 172898592000
+ 21612324 × 30000 that results in 648369720000
+ 21612324 × 600000 producing 12967394400000
+ 21612324 × 1000000 that is equal 21612324000000
+ 21612324 × 50000000 resulting in 1080616200000000

= 1116027495790548
