We're going to solve 2191 multiplied by 1801
2191 × 1801 = 1801 × (2191)
+ 1801 × 1 that is equal 1801
+ 1801 × 90 that results in 162090
+ 1801 × 100 that is equal 180100
+ 1801 × 2000 what gives us 3602000

= 3945991
