Alright, let's work through 1400 times 6039 step by step
1400 × 6039 = 6039 × (1400)
+ 6039 × 0 that is equal 0
+ 6039 × 00 what gives us 0
+ 6039 × 400 producing 2415600
+ 6039 × 1000 yielding 6039000

= 8454600
