No problem, we've got 1207 and 3663 to multiply
1207 × 3663 = 3663 × (1207)
+ 3663 × 7 what gives us 25641
+ 3663 × 00 giving us 0
+ 3663 × 200 that equals 732600
+ 3663 × 1000 that results in 3663000

= 4421241
