Alright, let's work through 73377383 times 81821506 step by step
73377383 × 81821506 = 81821506 × (73377383)
+ 81821506 × 3 giving us 245464518
+ 81821506 × 80 yielding 6545720480
+ 81821506 × 300 that equals 24546451800
+ 81821506 × 7000 that results in 572750542000
+ 81821506 × 70000 resulting in 5727505420000
+ 81821506 × 300000 yielding 24546451800000
+ 81821506 × 3000000 that equals 245464518000000
+ 81821506 × 70000000 resulting in 5727505420000000

= 6003847983398798
