No problem, we've got 8840 and 9947 to multiply
8840 × 9947 = 9947 × (8840)
+ 9947 × 0 producing 0
+ 9947 × 40 what gives us 397880
+ 9947 × 800 which equals 7957600
+ 9947 × 8000 what gives us 79576000

= 87931480
