Alright, let's work through 7809 times 5839 step by step
7809 × 5839 = 5839 × (7809)
+ 5839 × 9 what gives us 52551
+ 5839 × 00 what gives us 0
+ 5839 × 800 that is equal 4671200
+ 5839 × 7000 yielding 40873000

= 45596751
