No problem, we've got 7905 and 6491 to multiply
7905 × 6491 = 6491 × (7905)
+ 6491 × 5 what gives us 32455
+ 6491 × 00 which equals 0
+ 6491 × 900 yielding 5841900
+ 6491 × 7000 resulting in 45437000

= 51311355
