No problem, we've got 7955 and 1991 to multiply
7955 × 1991 = 1991 × (7955)
+ 1991 × 5 which equals 9955
+ 1991 × 50 which equals 99550
+ 1991 × 900 yielding 1791900
+ 1991 × 7000 resulting in 13937000

= 15838405
