Alright, let's work through 80562971 times 62379880 step by step
80562971 × 62379880 = 62379880 × (80562971)
+ 62379880 × 1 giving us 62379880
+ 62379880 × 70 what gives us 4366591600
+ 62379880 × 900 yielding 56141892000
+ 62379880 × 2000 producing 124759760000
+ 62379880 × 60000 what gives us 3742792800000
+ 62379880 × 500000 that results in 31189940000000
+ 62379880 × 0000000 that equals 0
+ 62379880 × 80000000 that equals 4990390400000000

= 5025508463423480
