No problem, we've got 9792 and 1387 to multiply
9792 × 1387 = 1387 × (9792)
+ 1387 × 2 what gives us 2774
+ 1387 × 90 giving us 124830
+ 1387 × 700 yielding 970900
+ 1387 × 9000 producing 12483000

= 13581504
