Alright, let's work through 3984 times 43 step by step
3984 × 43 = 43 × (3984)
+ 43 × 4 which equals 172
+ 43 × 80 which equals 3440
+ 43 × 900 that is equal 38700
+ 43 × 3000 what gives us 129000

= 171312
