Alright, let's work through 3671 times 1057 step by step
3671 × 1057 = 1057 × (3671)
+ 1057 × 1 yielding 1057
+ 1057 × 70 that equals 73990
+ 1057 × 600 that is equal 634200
+ 1057 × 3000 yielding 3171000

= 3880247
