Alright, let's work through 12609526 times 40647418 step by step
12609526 × 40647418 = 40647418 × (12609526)
+ 40647418 × 6 producing 243884508
+ 40647418 × 20 producing 812948360
+ 40647418 × 500 that is equal 20323709000
+ 40647418 × 9000 that results in 365826762000
+ 40647418 × 00000 producing 0
+ 40647418 × 600000 what gives us 24388450800000
+ 40647418 × 2000000 yielding 81294836000000
+ 40647418 × 10000000 resulting in 406474180000000

= 512544674103868
