We're going to solve 3851 multiplied by 1853
3851 × 1853 = 1853 × (3851)
+ 1853 × 1 what gives us 1853
+ 1853 × 50 that equals 92650
+ 1853 × 800 giving us 1482400
+ 1853 × 3000 producing 5559000

= 7135903
