Alright, let's work through 18941727 times 64230901 step by step
18941727 × 64230901 = 64230901 × (18941727)
+ 64230901 × 7 yielding 449616307
+ 64230901 × 20 giving us 1284618020
+ 64230901 × 700 resulting in 44961630700
+ 64230901 × 1000 that results in 64230901000
+ 64230901 × 40000 producing 2569236040000
+ 64230901 × 900000 yielding 57807810900000
+ 64230901 × 8000000 that results in 513847208000000
+ 64230901 × 10000000 resulting in 642309010000000

= 1216644191706027
