Alright, let's work through 8120 times 9189 step by step
8120 × 9189 = 9189 × (8120)
+ 9189 × 0 what gives us 0
+ 9189 × 20 which equals 183780
+ 9189 × 100 what gives us 918900
+ 9189 × 8000 what gives us 73512000

= 74614680
