Alright, let's work through 2790 times 7636 step by step
2790 × 7636 = 7636 × (2790)
+ 7636 × 0 producing 0
+ 7636 × 90 giving us 687240
+ 7636 × 700 that equals 5345200
+ 7636 × 2000 which equals 15272000

= 21304440
