Alright, let's work through 3640 times 2090 step by step
3640 × 2090 = 2090 × (3640)
+ 2090 × 0 producing 0
+ 2090 × 40 producing 83600
+ 2090 × 600 what gives us 1254000
+ 2090 × 3000 what gives us 6270000

= 7607600
