Alright, let's work through 7989 times 7934 step by step
7989 × 7934 = 7934 × (7989)
+ 7934 × 9 producing 71406
+ 7934 × 80 what gives us 634720
+ 7934 × 900 which equals 7140600
+ 7934 × 7000 giving us 55538000

= 63384726
