No problem, we've got 1584 and 7946 to multiply
1584 × 7946 = 7946 × (1584)
+ 7946 × 4 resulting in 31784
+ 7946 × 80 resulting in 635680
+ 7946 × 500 that is equal 3973000
+ 7946 × 1000 that is equal 7946000

= 12586464
