No problem, we've got 6380 and 210 to multiply
6380 × 210 = 210 × (6380)
+ 210 × 0 giving us 0
+ 210 × 80 that results in 16800
+ 210 × 300 which equals 63000
+ 210 × 6000 what gives us 1260000

= 1339800
