Alright, let's work through 8640 times 7429 step by step
8640 × 7429 = 7429 × (8640)
+ 7429 × 0 that results in 0
+ 7429 × 40 that equals 297160
+ 7429 × 600 which equals 4457400
+ 7429 × 8000 that is equal 59432000

= 64186560
