Alright, let's work through 3670 times 5603 step by step
3670 × 5603 = 5603 × (3670)
+ 5603 × 0 giving us 0
+ 5603 × 70 that results in 392210
+ 5603 × 600 resulting in 3361800
+ 5603 × 3000 which equals 16809000

= 20563010
