Alright, let's work through 40121009 times 56231556 step by step
40121009 × 56231556 = 56231556 × (40121009)
+ 56231556 × 9 that equals 506084004
+ 56231556 × 00 that equals 0
+ 56231556 × 000 which equals 0
+ 56231556 × 1000 what gives us 56231556000
+ 56231556 × 20000 resulting in 1124631120000
+ 56231556 × 100000 that is equal 5623155600000
+ 56231556 × 0000000 producing 0
+ 56231556 × 40000000 resulting in 2249262240000000

= 2256066764360004
