No problem, we've got 4158 and 984 to multiply
4158 × 984 = 984 × (4158)
+ 984 × 8 that results in 7872
+ 984 × 50 resulting in 49200
+ 984 × 100 what gives us 98400
+ 984 × 4000 producing 3936000

= 4091472
