Alright, let's work through 3635 times 6036 step by step
3635 × 6036 = 6036 × (3635)
+ 6036 × 5 that equals 30180
+ 6036 × 30 that is equal 181080
+ 6036 × 600 yielding 3621600
+ 6036 × 3000 giving us 18108000

= 21940860
