Alright, let's work through 1309 times 3628 step by step
1309 × 3628 = 3628 × (1309)
+ 3628 × 9 giving us 32652
+ 3628 × 00 resulting in 0
+ 3628 × 300 resulting in 1088400
+ 3628 × 1000 giving us 3628000

= 4749052
