Alright, let's work through 1283 times 1679 step by step
1283 × 1679 = 1679 × (1283)
+ 1679 × 3 what gives us 5037
+ 1679 × 80 that is equal 134320
+ 1679 × 200 producing 335800
+ 1679 × 1000 producing 1679000

= 2154157
