Alright, let's work through 1345 times 8763 step by step
1345 × 8763 = 8763 × (1345)
+ 8763 × 5 that is equal 43815
+ 8763 × 40 producing 350520
+ 8763 × 300 which equals 2628900
+ 8763 × 1000 yielding 8763000

= 11786235
