Alright, let's work through 3631 times 2086 step by step
3631 × 2086 = 2086 × (3631)
+ 2086 × 1 what gives us 2086
+ 2086 × 30 giving us 62580
+ 2086 × 600 what gives us 1251600
+ 2086 × 3000 producing 6258000

= 7574266
