No problem, we've got 8138 and 9935 to multiply
8138 × 9935 = 9935 × (8138)
+ 9935 × 8 that is equal 79480
+ 9935 × 30 producing 298050
+ 9935 × 100 that is equal 993500
+ 9935 × 8000 that equals 79480000

= 80851030
