No problem, we've got 4186 and 4485 to multiply
4186 × 4485 = 4485 × (4186)
+ 4485 × 6 that equals 26910
+ 4485 × 80 giving us 358800
+ 4485 × 100 what gives us 448500
+ 4485 × 4000 yielding 17940000

= 18774210
