Alright, let's work through 1962 times 7891 step by step
1962 × 7891 = 7891 × (1962)
+ 7891 × 2 yielding 15782
+ 7891 × 60 resulting in 473460
+ 7891 × 900 what gives us 7101900
+ 7891 × 1000 yielding 7891000

= 15482142
