Alright, let's work through 7974 times 3969 step by step
7974 × 3969 = 3969 × (7974)
+ 3969 × 4 resulting in 15876
+ 3969 × 70 what gives us 277830
+ 3969 × 900 resulting in 3572100
+ 3969 × 7000 that is equal 27783000

= 31648806
