Alright, let's work through 1697 times 641 step by step
1697 × 641 = 641 × (1697)
+ 641 × 7 which equals 4487
+ 641 × 90 what gives us 57690
+ 641 × 600 that equals 384600
+ 641 × 1000 that equals 641000

= 1087777
