Alright, let's work through 12630706 times 20326318 step by step
12630706 × 20326318 = 20326318 × (12630706)
+ 20326318 × 6 which equals 121957908
+ 20326318 × 00 that results in 0
+ 20326318 × 700 yielding 14228422600
+ 20326318 × 0000 resulting in 0
+ 20326318 × 30000 that equals 609789540000
+ 20326318 × 600000 yielding 12195790800000
+ 20326318 × 2000000 which equals 40652636000000
+ 20326318 × 10000000 which equals 203263180000000

= 256735746720508
