Alright, let's work through 7921 times 9926 step by step
7921 × 9926 = 9926 × (7921)
+ 9926 × 1 what gives us 9926
+ 9926 × 20 what gives us 198520
+ 9926 × 900 what gives us 8933400
+ 9926 × 7000 that equals 69482000

= 78623846
