No problem, we've got 8131 and 1613 to multiply
8131 × 1613 = 1613 × (8131)
+ 1613 × 1 that is equal 1613
+ 1613 × 30 producing 48390
+ 1613 × 100 producing 161300
+ 1613 × 8000 what gives us 12904000

= 13115303
