Alright, let's work through 1086 times 6636 step by step
1086 × 6636 = 6636 × (1086)
+ 6636 × 6 what gives us 39816
+ 6636 × 80 producing 530880
+ 6636 × 000 which equals 0
+ 6636 × 1000 which equals 6636000

= 7206696
