No problem, we've got 8438 and 320 to multiply
8438 × 320 = 320 × (8438)
+ 320 × 8 resulting in 2560
+ 320 × 30 that results in 9600
+ 320 × 400 that is equal 128000
+ 320 × 8000 which equals 2560000

= 2700160
