Let's calculate 1879 x 1865
1879 × 1865 = 1865 × (1879)
+ 1865 × 9 that results in 16785
+ 1865 × 70 that is equal 130550
+ 1865 × 800 which equals 1492000
+ 1865 × 1000 which equals 1865000

= 3504335
