Alright, let's work through 9158 times 3209 step by step
9158 × 3209 = 3209 × (9158)
+ 3209 × 8 what gives us 25672
+ 3209 × 50 that is equal 160450
+ 3209 × 100 giving us 320900
+ 3209 × 9000 which equals 28881000

= 29388022
