Alright, let's work through 51163049 times 71604345 step by step
51163049 × 71604345 = 71604345 × (51163049)
+ 71604345 × 9 giving us 644439105
+ 71604345 × 40 that results in 2864173800
+ 71604345 × 000 yielding 0
+ 71604345 × 3000 that equals 214813035000
+ 71604345 × 60000 resulting in 4296260700000
+ 71604345 × 100000 that results in 7160434500000
+ 71604345 × 1000000 that equals 71604345000000
+ 71604345 × 50000000 resulting in 3580217250000000

= 3663496611847905
