Alright, let's work through 1994 times 668 step by step
1994 × 668 = 668 × (1994)
+ 668 × 4 what gives us 2672
+ 668 × 90 resulting in 60120
+ 668 × 900 that equals 601200
+ 668 × 1000 producing 668000

= 1331992
