Alright, let's work through 5321 times 102 step by step
5321 × 102 = 102 × (5321)
+ 102 × 1 which equals 102
+ 102 × 20 that results in 2040
+ 102 × 300 producing 30600
+ 102 × 5000 what gives us 510000

= 542742
