We're going to solve 2028 multiplied by 2115
2028 × 2115 = 2115 × (2028)
+ 2115 × 8 that is equal 16920
+ 2115 × 20 that results in 42300
+ 2115 × 000 what gives us 0
+ 2115 × 2000 that results in 4230000

= 4289220
