We're going to solve 5139 multiplied by 8509
5139 × 8509 = 8509 × (5139)
+ 8509 × 9 that results in 76581
+ 8509 × 30 that equals 255270
+ 8509 × 100 that equals 850900
+ 8509 × 5000 which equals 42545000

= 43727751
