No problem, we've got 1107 and 3957 to multiply
1107 × 3957 = 3957 × (1107)
+ 3957 × 7 giving us 27699
+ 3957 × 00 resulting in 0
+ 3957 × 100 yielding 395700
+ 3957 × 1000 what gives us 3957000

= 4380399
