Alright, let's work through 5139 times 1628 step by step
5139 × 1628 = 1628 × (5139)
+ 1628 × 9 yielding 14652
+ 1628 × 30 that is equal 48840
+ 1628 × 100 that is equal 162800
+ 1628 × 5000 that equals 8140000

= 8366292
