Alright, let's work through 80047571 times 61073486 step by step
80047571 × 61073486 = 61073486 × (80047571)
+ 61073486 × 1 what gives us 61073486
+ 61073486 × 70 producing 4275144020
+ 61073486 × 500 that results in 30536743000
+ 61073486 × 7000 resulting in 427514402000
+ 61073486 × 40000 producing 2442939440000
+ 61073486 × 000000 giving us 0
+ 61073486 × 0000000 what gives us 0
+ 61073486 × 80000000 giving us 4885878880000000

= 4888784206802506
