Alright, let's work through 2155 times 7597 step by step
2155 × 7597 = 7597 × (2155)
+ 7597 × 5 that is equal 37985
+ 7597 × 50 resulting in 379850
+ 7597 × 100 resulting in 759700
+ 7597 × 2000 resulting in 15194000

= 16371535
