Alright, let's work through 7939 times 1571 step by step
7939 × 1571 = 1571 × (7939)
+ 1571 × 9 producing 14139
+ 1571 × 30 giving us 47130
+ 1571 × 900 that results in 1413900
+ 1571 × 7000 that is equal 10997000

= 12472169
