No problem, we've got 7909 and 9979 to multiply
7909 × 9979 = 9979 × (7909)
+ 9979 × 9 that results in 89811
+ 9979 × 00 producing 0
+ 9979 × 900 resulting in 8981100
+ 9979 × 7000 that is equal 69853000

= 78923911
