No problem, we've got 6241 and 1025 to multiply
6241 × 1025 = 1025 × (6241)
+ 1025 × 1 what gives us 1025
+ 1025 × 40 producing 41000
+ 1025 × 200 that is equal 205000
+ 1025 × 6000 producing 6150000

= 6397025
