Alright, let's work through 5390 times 9542 step by step
5390 × 9542 = 9542 × (5390)
+ 9542 × 0 producing 0
+ 9542 × 90 giving us 858780
+ 9542 × 300 that equals 2862600
+ 9542 × 5000 which equals 47710000

= 51431380
