Alright, let's work through 9439 times 9200 step by step
9439 × 9200 = 9200 × (9439)
+ 9200 × 9 which equals 82800
+ 9200 × 30 resulting in 276000
+ 9200 × 400 yielding 3680000
+ 9200 × 9000 that equals 82800000

= 86838800
