No problem, we've got 4121 and 7070 to multiply
4121 × 7070 = 7070 × (4121)
+ 7070 × 1 giving us 7070
+ 7070 × 20 producing 141400
+ 7070 × 100 what gives us 707000
+ 7070 × 4000 which equals 28280000

= 29135470
