Alright, let's work through 1697 times 3960 step by step
1697 × 3960 = 3960 × (1697)
+ 3960 × 7 producing 27720
+ 3960 × 90 producing 356400
+ 3960 × 600 giving us 2376000
+ 3960 × 1000 that is equal 3960000

= 6720120
