Alright, let's work through 3489 times 4485 step by step
3489 × 4485 = 4485 × (3489)
+ 4485 × 9 resulting in 40365
+ 4485 × 80 that is equal 358800
+ 4485 × 400 that results in 1794000
+ 4485 × 3000 that is equal 13455000

= 15648165
