No problem, we've got 9124 and 8628 to multiply
9124 × 8628 = 8628 × (9124)
+ 8628 × 4 resulting in 34512
+ 8628 × 20 giving us 172560
+ 8628 × 100 what gives us 862800
+ 8628 × 9000 resulting in 77652000

= 78721872
