No problem, we've got 8392 and 8639 to multiply
8392 × 8639 = 8639 × (8392)
+ 8639 × 2 producing 17278
+ 8639 × 90 that results in 777510
+ 8639 × 300 giving us 2591700
+ 8639 × 8000 producing 69112000

= 72498488
