No problem, we've got 3642 and 3480 to multiply
3642 × 3480 = 3480 × (3642)
+ 3480 × 2 yielding 6960
+ 3480 × 40 giving us 139200
+ 3480 × 600 that is equal 2088000
+ 3480 × 3000 what gives us 10440000

= 12674160
