Alright, let's work through 2538 times 8159 step by step
2538 × 8159 = 8159 × (2538)
+ 8159 × 8 that results in 65272
+ 8159 × 30 that results in 244770
+ 8159 × 500 producing 4079500
+ 8159 × 2000 resulting in 16318000

= 20707542
