Alright, let's work through 7358 times 6399 step by step
7358 × 6399 = 6399 × (7358)
+ 6399 × 8 yielding 51192
+ 6399 × 50 giving us 319950
+ 6399 × 300 that is equal 1919700
+ 6399 × 7000 that equals 44793000

= 47083842
