No problem, we've got 3648 and 1116 to multiply
3648 × 1116 = 1116 × (3648)
+ 1116 × 8 producing 8928
+ 1116 × 40 what gives us 44640
+ 1116 × 600 that equals 669600
+ 1116 × 3000 what gives us 3348000

= 4071168
