Alright, let's work through 7139 times 7599 step by step
7139 × 7599 = 7599 × (7139)
+ 7599 × 9 that results in 68391
+ 7599 × 30 that equals 227970
+ 7599 × 100 giving us 759900
+ 7599 × 7000 yielding 53193000

= 54249261
