Alright, let's work through 18535628 times 67373600 step by step
18535628 × 67373600 = 67373600 × (18535628)
+ 67373600 × 8 which equals 538988800
+ 67373600 × 20 giving us 1347472000
+ 67373600 × 600 yielding 40424160000
+ 67373600 × 5000 producing 336868000000
+ 67373600 × 30000 that results in 2021208000000
+ 67373600 × 500000 what gives us 33686800000000
+ 67373600 × 8000000 that results in 538988800000000
+ 67373600 × 10000000 producing 673736000000000

= 1248811986620800
