Alright, let's work through 41394078 times 87640845 step by step
41394078 × 87640845 = 87640845 × (41394078)
+ 87640845 × 8 resulting in 701126760
+ 87640845 × 70 giving us 6134859150
+ 87640845 × 000 yielding 0
+ 87640845 × 4000 yielding 350563380000
+ 87640845 × 90000 resulting in 7887676050000
+ 87640845 × 300000 that equals 26292253500000
+ 87640845 × 1000000 that equals 87640845000000
+ 87640845 × 40000000 producing 3505633800000000

= 3627811973915910
