No problem, we've got 8138 and 9967 to multiply
8138 × 9967 = 9967 × (8138)
+ 9967 × 8 giving us 79736
+ 9967 × 30 giving us 299010
+ 9967 × 100 that is equal 996700
+ 9967 × 8000 which equals 79736000

= 81111446
