No problem, we've got 3984 and 916 to multiply
3984 × 916 = 916 × (3984)
+ 916 × 4 what gives us 3664
+ 916 × 80 resulting in 73280
+ 916 × 900 what gives us 824400
+ 916 × 3000 which equals 2748000

= 3649344
