Alright, let's work through 4890 times 4042 step by step
4890 × 4042 = 4042 × (4890)
+ 4042 × 0 what gives us 0
+ 4042 × 90 that results in 363780
+ 4042 × 800 producing 3233600
+ 4042 × 4000 resulting in 16168000

= 19765380
