Alright, let's work through 7439 times 2739 step by step
7439 × 2739 = 2739 × (7439)
+ 2739 × 9 what gives us 24651
+ 2739 × 30 that results in 82170
+ 2739 × 400 giving us 1095600
+ 2739 × 7000 that is equal 19173000

= 20375421
