Alright, let's work through 5622 times 2490 step by step
5622 × 2490 = 2490 × (5622)
+ 2490 × 2 what gives us 4980
+ 2490 × 20 that is equal 49800
+ 2490 × 600 which equals 1494000
+ 2490 × 5000 giving us 12450000

= 13998780
