Alright, let's work through 1786 times 7077 step by step
1786 × 7077 = 7077 × (1786)
+ 7077 × 6 resulting in 42462
+ 7077 × 80 resulting in 566160
+ 7077 × 700 giving us 4953900
+ 7077 × 1000 that is equal 7077000

= 12639522
