Alright, let's work through 39962284 times 10245729 step by step
39962284 × 10245729 = 10245729 × (39962284)
+ 10245729 × 4 that results in 40982916
+ 10245729 × 80 yielding 819658320
+ 10245729 × 200 resulting in 2049145800
+ 10245729 × 2000 yielding 20491458000
+ 10245729 × 60000 resulting in 614743740000
+ 10245729 × 900000 that equals 9221156100000
+ 10245729 × 9000000 that results in 92211561000000
+ 10245729 × 30000000 resulting in 307371870000000

= 409442732085036
