No problem, we've got 6020 and 8403 to multiply
6020 × 8403 = 8403 × (6020)
+ 8403 × 0 what gives us 0
+ 8403 × 20 giving us 168060
+ 8403 × 000 giving us 0
+ 8403 × 6000 which equals 50418000

= 50586060
