No problem, we've got 8471 and 728 to multiply
8471 × 728 = 728 × (8471)
+ 728 × 1 which equals 728
+ 728 × 70 that equals 50960
+ 728 × 400 that results in 291200
+ 728 × 8000 that is equal 5824000

= 6166888
