Let's calculate 7839 x 7039
7839 × 7039 = 7039 × (7839)
+ 7039 × 9 giving us 63351
+ 7039 × 30 that results in 211170
+ 7039 × 800 what gives us 5631200
+ 7039 × 7000 what gives us 49273000

= 55178721
