Alright, let's work through 5150 times 7909 step by step
5150 × 7909 = 7909 × (5150)
+ 7909 × 0 giving us 0
+ 7909 × 50 that equals 395450
+ 7909 × 100 which equals 790900
+ 7909 × 5000 that is equal 39545000

= 40731350
