Alright, let's work through 9942 times 5147 step by step
9942 × 5147 = 5147 × (9942)
+ 5147 × 2 that is equal 10294
+ 5147 × 40 resulting in 205880
+ 5147 × 900 which equals 4632300
+ 5147 × 9000 what gives us 46323000

= 51171474
