No problem, we've got 1636 and 4241 to multiply
1636 × 4241 = 4241 × (1636)
+ 4241 × 6 what gives us 25446
+ 4241 × 30 producing 127230
+ 4241 × 600 resulting in 2544600
+ 4241 × 1000 that results in 4241000

= 6938276
