Alright, let's work through 1992 times 4311 step by step
1992 × 4311 = 4311 × (1992)
+ 4311 × 2 which equals 8622
+ 4311 × 90 what gives us 387990
+ 4311 × 900 that equals 3879900
+ 4311 × 1000 resulting in 4311000

= 8587512
