No problem, we've got 7817 and 3968 to multiply
7817 × 3968 = 3968 × (7817)
+ 3968 × 7 yielding 27776
+ 3968 × 10 what gives us 39680
+ 3968 × 800 which equals 3174400
+ 3968 × 7000 what gives us 27776000

= 31017856
