Alright, let's work through 3659 times 5180 step by step
3659 × 5180 = 5180 × (3659)
+ 5180 × 9 giving us 46620
+ 5180 × 50 that equals 259000
+ 5180 × 600 producing 3108000
+ 5180 × 3000 giving us 15540000

= 18953620
