No problem, we've got 4006 and 1915 to multiply
4006 × 1915 = 1915 × (4006)
+ 1915 × 6 which equals 11490
+ 1915 × 00 which equals 0
+ 1915 × 000 resulting in 0
+ 1915 × 4000 that is equal 7660000

= 7671490
