Alright, let's work through 4936 times 5639 step by step
4936 × 5639 = 5639 × (4936)
+ 5639 × 6 which equals 33834
+ 5639 × 30 yielding 169170
+ 5639 × 900 that equals 5075100
+ 5639 × 4000 yielding 22556000

= 27834104
