Alright, let's work through 66374574 times 55626997 step by step
66374574 × 55626997 = 55626997 × (66374574)
+ 55626997 × 4 which equals 222507988
+ 55626997 × 70 which equals 3893889790
+ 55626997 × 500 what gives us 27813498500
+ 55626997 × 4000 that equals 222507988000
+ 55626997 × 70000 giving us 3893889790000
+ 55626997 × 300000 yielding 16688099100000
+ 55626997 × 6000000 giving us 333761982000000
+ 55626997 × 60000000 that equals 3337619820000000

= 3692218228774278
