Alright, let's work through 80407247 times 54979085 step by step
80407247 × 54979085 = 54979085 × (80407247)
+ 54979085 × 7 yielding 384853595
+ 54979085 × 40 that equals 2199163400
+ 54979085 × 200 that is equal 10995817000
+ 54979085 × 7000 producing 384853595000
+ 54979085 × 00000 producing 0
+ 54979085 × 400000 that equals 21991634000000
+ 54979085 × 0000000 that results in 0
+ 54979085 × 80000000 that equals 4398326800000000

= 4420716867428995
