Alright, let's work through 1649 times 4378 step by step
1649 × 4378 = 4378 × (1649)
+ 4378 × 9 yielding 39402
+ 4378 × 40 resulting in 175120
+ 4378 × 600 what gives us 2626800
+ 4378 × 1000 producing 4378000

= 7219322
