No problem, we've got 7909 and 1920 to multiply
7909 × 1920 = 1920 × (7909)
+ 1920 × 9 giving us 17280
+ 1920 × 00 that results in 0
+ 1920 × 900 which equals 1728000
+ 1920 × 7000 that is equal 13440000

= 15185280
