Alright, let's work through 2442 times 7236 step by step
2442 × 7236 = 7236 × (2442)
+ 7236 × 2 yielding 14472
+ 7236 × 40 producing 289440
+ 7236 × 400 which equals 2894400
+ 7236 × 2000 yielding 14472000

= 17670312
