Alright, let's work through 9428 times 8500 step by step
9428 × 8500 = 8500 × (9428)
+ 8500 × 8 what gives us 68000
+ 8500 × 20 that results in 170000
+ 8500 × 400 that is equal 3400000
+ 8500 × 9000 what gives us 76500000

= 80138000
