Alright, let's work through 1056 times 7320 step by step
1056 × 7320 = 7320 × (1056)
+ 7320 × 6 which equals 43920
+ 7320 × 50 resulting in 366000
+ 7320 × 000 yielding 0
+ 7320 × 1000 that equals 7320000

= 7729920
