Alright, let's work through 8840 times 9409 step by step
8840 × 9409 = 9409 × (8840)
+ 9409 × 0 what gives us 0
+ 9409 × 40 that is equal 376360
+ 9409 × 800 that is equal 7527200
+ 9409 × 8000 giving us 75272000

= 83175560
