Alright, let's work through 52321473 times 66872373 step by step
52321473 × 66872373 = 66872373 × (52321473)
+ 66872373 × 3 giving us 200617119
+ 66872373 × 70 producing 4681066110
+ 66872373 × 400 producing 26748949200
+ 66872373 × 1000 which equals 66872373000
+ 66872373 × 20000 resulting in 1337447460000
+ 66872373 × 300000 that results in 20061711900000
+ 66872373 × 2000000 resulting in 133744746000000
+ 66872373 × 50000000 that is equal 3343618650000000

= 3498861058365429
