Alright, let's work through 2439 times 7236 step by step
2439 × 7236 = 7236 × (2439)
+ 7236 × 9 that is equal 65124
+ 7236 × 30 that equals 217080
+ 7236 × 400 resulting in 2894400
+ 7236 × 2000 that equals 14472000

= 17648604
