Alright, let's work through 4875 times 2145 step by step
4875 × 2145 = 2145 × (4875)
+ 2145 × 5 that equals 10725
+ 2145 × 70 which equals 150150
+ 2145 × 800 that results in 1716000
+ 2145 × 4000 giving us 8580000

= 10456875
