Alright, let's work through 3942 times 7407 step by step
3942 × 7407 = 7407 × (3942)
+ 7407 × 2 which equals 14814
+ 7407 × 40 producing 296280
+ 7407 × 900 giving us 6666300
+ 7407 × 3000 what gives us 22221000

= 29198394
