Alright, let's work through 1200 times 7159 step by step
1200 × 7159 = 7159 × (1200)
+ 7159 × 0 yielding 0
+ 7159 × 00 that results in 0
+ 7159 × 200 producing 1431800
+ 7159 × 1000 producing 7159000

= 8590800
