Alright, let's work through 1799 times 1390 step by step
1799 × 1390 = 1390 × (1799)
+ 1390 × 9 resulting in 12510
+ 1390 × 90 producing 125100
+ 1390 × 700 giving us 973000
+ 1390 × 1000 that is equal 1390000

= 2500610
