Alright, let's work through 9942 times 2602 step by step
9942 × 2602 = 2602 × (9942)
+ 2602 × 2 that is equal 5204
+ 2602 × 40 yielding 104080
+ 2602 × 900 that equals 2341800
+ 2602 × 9000 that equals 23418000

= 25869084
