No problem, we've got 1293 and 7821 to multiply
1293 × 7821 = 7821 × (1293)
+ 7821 × 3 resulting in 23463
+ 7821 × 90 giving us 703890
+ 7821 × 200 that results in 1564200
+ 7821 × 1000 producing 7821000

= 10112553
