Alright, let's work through 8485 times 9974 step by step
8485 × 9974 = 9974 × (8485)
+ 9974 × 5 yielding 49870
+ 9974 × 80 giving us 797920
+ 9974 × 400 producing 3989600
+ 9974 × 8000 yielding 79792000

= 84629390
