No problem, we've got 4678 and 3958 to multiply
4678 × 3958 = 3958 × (4678)
+ 3958 × 8 what gives us 31664
+ 3958 × 70 yielding 277060
+ 3958 × 600 that equals 2374800
+ 3958 × 4000 what gives us 15832000

= 18515524
