We're going to solve 2109 multiplied by 5875
2109 × 5875 = 5875 × (2109)
+ 5875 × 9 which equals 52875
+ 5875 × 00 that results in 0
+ 5875 × 100 what gives us 587500
+ 5875 × 2000 yielding 11750000

= 12390375
