No problem, we've got 1689 and 6894 to multiply
1689 × 6894 = 6894 × (1689)
+ 6894 × 9 yielding 62046
+ 6894 × 80 yielding 551520
+ 6894 × 600 which equals 4136400
+ 6894 × 1000 producing 6894000

= 11643966
