Alright, let's work through 2428 times 7724 step by step
2428 × 7724 = 7724 × (2428)
+ 7724 × 8 what gives us 61792
+ 7724 × 20 that results in 154480
+ 7724 × 400 what gives us 3089600
+ 7724 × 2000 producing 15448000

= 18753872
