Alright, let's work through 3172 times 50 step by step
3172 × 50 = 50 × (3172)
+ 50 × 2 that results in 100
+ 50 × 70 yielding 3500
+ 50 × 100 that results in 5000
+ 50 × 3000 giving us 150000

= 158600
