Alright, let's work through 3671 times 641 step by step
3671 × 641 = 641 × (3671)
+ 641 × 1 giving us 641
+ 641 × 70 what gives us 44870
+ 641 × 600 that results in 384600
+ 641 × 3000 what gives us 1923000

= 2353111
