No problem, we've got 8789 and 8864 to multiply
8789 × 8864 = 8864 × (8789)
+ 8864 × 9 yielding 79776
+ 8864 × 80 that is equal 709120
+ 8864 × 700 that equals 6204800
+ 8864 × 8000 which equals 70912000

= 77905696
