Alright, let's work through 3644 times 1903 step by step
3644 × 1903 = 1903 × (3644)
+ 1903 × 4 what gives us 7612
+ 1903 × 40 giving us 76120
+ 1903 × 600 producing 1141800
+ 1903 × 3000 that is equal 5709000

= 6934532
