Let's calculate 3810 x 3530
3810 × 3530 = 3530 × (3810)
+ 3530 × 0 that results in 0
+ 3530 × 10 that results in 35300
+ 3530 × 800 that results in 2824000
+ 3530 × 3000 giving us 10590000

= 13449300
