Alright, let's work through 2790 times 202 step by step
2790 × 202 = 202 × (2790)
+ 202 × 0 producing 0
+ 202 × 90 that is equal 18180
+ 202 × 700 giving us 141400
+ 202 × 2000 what gives us 404000

= 563580
