Alright, let's work through 1186 times 5357 step by step
1186 × 5357 = 5357 × (1186)
+ 5357 × 6 producing 32142
+ 5357 × 80 yielding 428560
+ 5357 × 100 producing 535700
+ 5357 × 1000 yielding 5357000

= 6353402
