Alright, let's work through 51125973 times 61080815 step by step
51125973 × 61080815 = 61080815 × (51125973)
+ 61080815 × 3 producing 183242445
+ 61080815 × 70 that equals 4275657050
+ 61080815 × 900 resulting in 54972733500
+ 61080815 × 5000 resulting in 305404075000
+ 61080815 × 20000 that results in 1221616300000
+ 61080815 × 100000 producing 6108081500000
+ 61080815 × 1000000 producing 61080815000000
+ 61080815 × 50000000 yielding 3054040750000000

= 3122816098507995
