Alright, let's work through 5181819 times 73131972 step by step
5181819 × 73131972 = 73131972 × (5181819)
+ 73131972 × 9 that results in 658187748
+ 73131972 × 10 which equals 731319720
+ 73131972 × 800 giving us 58505577600
+ 73131972 × 1000 giving us 73131972000
+ 73131972 × 80000 producing 5850557760000
+ 73131972 × 100000 giving us 7313197200000
+ 73131972 × 5000000 that equals 365659860000000

= 378956642017068
