No problem, we've got 8971 and 8670 to multiply
8971 × 8670 = 8670 × (8971)
+ 8670 × 1 giving us 8670
+ 8670 × 70 what gives us 606900
+ 8670 × 900 what gives us 7803000
+ 8670 × 8000 producing 69360000

= 77778570
