No problem, we've got 8639 and 7752 to multiply
8639 × 7752 = 7752 × (8639)
+ 7752 × 9 that is equal 69768
+ 7752 × 30 that results in 232560
+ 7752 × 600 which equals 4651200
+ 7752 × 8000 that is equal 62016000

= 66969528
