We're going to solve 7855 multiplied by 1601
7855 × 1601 = 1601 × (7855)
+ 1601 × 5 yielding 8005
+ 1601 × 50 that is equal 80050
+ 1601 × 800 giving us 1280800
+ 1601 × 7000 that results in 11207000

= 12575855
