We're going to solve 4280 multiplied by 1963
4280 × 1963 = 1963 × (4280)
+ 1963 × 0 producing 0
+ 1963 × 80 what gives us 157040
+ 1963 × 200 giving us 392600
+ 1963 × 4000 that results in 7852000

= 8401640
