Alright, let's work through 3497 times 80 step by step
3497 × 80 = 80 × (3497)
+ 80 × 7 that results in 560
+ 80 × 90 that results in 7200
+ 80 × 400 resulting in 32000
+ 80 × 3000 which equals 240000

= 279760
