Alright, let's work through 2615 times 637 step by step
2615 × 637 = 637 × (2615)
+ 637 × 5 which equals 3185
+ 637 × 10 that is equal 6370
+ 637 × 600 resulting in 382200
+ 637 × 2000 giving us 1274000

= 1665755
