Alright, let's work through 7931 times 4909 step by step
7931 × 4909 = 4909 × (7931)
+ 4909 × 1 that is equal 4909
+ 4909 × 30 that results in 147270
+ 4909 × 900 that equals 4418100
+ 4909 × 7000 that results in 34363000

= 38933279
