No problem, we've got 7401 and 621 to multiply
7401 × 621 = 621 × (7401)
+ 621 × 1 which equals 621
+ 621 × 00 what gives us 0
+ 621 × 400 that is equal 248400
+ 621 × 7000 that results in 4347000

= 4596021
