No problem, we've got 1686 and 7248 to multiply
1686 × 7248 = 7248 × (1686)
+ 7248 × 6 that is equal 43488
+ 7248 × 80 that results in 579840
+ 7248 × 600 giving us 4348800
+ 7248 × 1000 that equals 7248000

= 12220128
