We're going to solve 7857 multiplied by 3964
7857 × 3964 = 3964 × (7857)
+ 3964 × 7 giving us 27748
+ 3964 × 50 resulting in 198200
+ 3964 × 800 what gives us 3171200
+ 3964 × 7000 yielding 27748000

= 31145148
