No problem, we've got 9480 and 800 to multiply
9480 × 800 = 800 × (9480)
+ 800 × 0 that is equal 0
+ 800 × 80 what gives us 64000
+ 800 × 400 that is equal 320000
+ 800 × 9000 resulting in 7200000

= 7584000
