No problem, we've got 1704 and 7845 to multiply
1704 × 7845 = 7845 × (1704)
+ 7845 × 4 resulting in 31380
+ 7845 × 00 giving us 0
+ 7845 × 700 which equals 5491500
+ 7845 × 1000 producing 7845000

= 13367880
