Alright, let's work through 4020 times 4094 step by step
4020 × 4094 = 4094 × (4020)
+ 4094 × 0 which equals 0
+ 4094 × 20 which equals 81880
+ 4094 × 000 which equals 0
+ 4094 × 4000 that is equal 16376000

= 16457880
