No problem, we've got 8156 and 1509 to multiply
8156 × 1509 = 1509 × (8156)
+ 1509 × 6 that equals 9054
+ 1509 × 50 giving us 75450
+ 1509 × 100 that is equal 150900
+ 1509 × 8000 that is equal 12072000

= 12307404
