We're going to solve 6891 multiplied by 4350
6891 × 4350 = 4350 × (6891)
+ 4350 × 1 what gives us 4350
+ 4350 × 90 resulting in 391500
+ 4350 × 800 that is equal 3480000
+ 4350 × 6000 resulting in 26100000

= 29975850
