No problem, we've got 1687 and 3975 to multiply
1687 × 3975 = 3975 × (1687)
+ 3975 × 7 that is equal 27825
+ 3975 × 80 which equals 318000
+ 3975 × 600 resulting in 2385000
+ 3975 × 1000 that equals 3975000

= 6705825
