Alright, let's work through 9139 times 5601 step by step
9139 × 5601 = 5601 × (9139)
+ 5601 × 9 that results in 50409
+ 5601 × 30 that equals 168030
+ 5601 × 100 that is equal 560100
+ 5601 × 9000 yielding 50409000

= 51187539
