Alright, let's work through 8978 times 9020 step by step
8978 × 9020 = 9020 × (8978)
+ 9020 × 8 that is equal 72160
+ 9020 × 70 producing 631400
+ 9020 × 900 what gives us 8118000
+ 9020 × 8000 resulting in 72160000

= 80981560
