Alright, let's work through 20064476 times 76986179 step by step
20064476 × 76986179 = 76986179 × (20064476)
+ 76986179 × 6 what gives us 461917074
+ 76986179 × 70 yielding 5389032530
+ 76986179 × 400 yielding 30794471600
+ 76986179 × 4000 giving us 307944716000
+ 76986179 × 60000 resulting in 4619170740000
+ 76986179 × 000000 producing 0
+ 76986179 × 0000000 giving us 0
+ 76986179 × 20000000 which equals 1539723580000000

= 1544687340877204
