Alright, let's work through 41001110 times 78509809 step by step
41001110 × 78509809 = 78509809 × (41001110)
+ 78509809 × 0 that is equal 0
+ 78509809 × 10 resulting in 785098090
+ 78509809 × 100 that is equal 7850980900
+ 78509809 × 1000 yielding 78509809000
+ 78509809 × 00000 what gives us 0
+ 78509809 × 000000 that equals 0
+ 78509809 × 1000000 what gives us 78509809000000
+ 78509809 × 40000000 giving us 3140392360000000

= 3218989314887990
