No problem, we've got 3477 and 1200 to multiply
3477 × 1200 = 1200 × (3477)
+ 1200 × 7 that is equal 8400
+ 1200 × 70 producing 84000
+ 1200 × 400 giving us 480000
+ 1200 × 3000 producing 3600000

= 4172400
