No problem, we've got 1536 and 7956 to multiply
1536 × 7956 = 7956 × (1536)
+ 7956 × 6 that is equal 47736
+ 7956 × 30 which equals 238680
+ 7956 × 500 resulting in 3978000
+ 7956 × 1000 that equals 7956000

= 12220416
