Alright, let's work through 80326348 times 49915006 step by step
80326348 × 49915006 = 49915006 × (80326348)
+ 49915006 × 8 what gives us 399320048
+ 49915006 × 40 what gives us 1996600240
+ 49915006 × 300 yielding 14974501800
+ 49915006 × 6000 that equals 299490036000
+ 49915006 × 20000 yielding 998300120000
+ 49915006 × 300000 that equals 14974501800000
+ 49915006 × 0000000 yielding 0
+ 49915006 × 80000000 what gives us 3993200480000000

= 4009490142378088
