Alright, let's work through 3684 times 4977 step by step
3684 × 4977 = 4977 × (3684)
+ 4977 × 4 that equals 19908
+ 4977 × 80 that is equal 398160
+ 4977 × 600 what gives us 2986200
+ 4977 × 3000 what gives us 14931000

= 18335268
