Alright, let's work through 1683 times 781 step by step
1683 × 781 = 781 × (1683)
+ 781 × 3 which equals 2343
+ 781 × 80 producing 62480
+ 781 × 600 resulting in 468600
+ 781 × 1000 which equals 781000

= 1314423
