Alright, let's work through 7821 times 7539 step by step
7821 × 7539 = 7539 × (7821)
+ 7539 × 1 that results in 7539
+ 7539 × 20 what gives us 150780
+ 7539 × 800 producing 6031200
+ 7539 × 7000 giving us 52773000

= 58962519
