No problem, we've got 7230 and 1728 to multiply
7230 × 1728 = 1728 × (7230)
+ 1728 × 0 what gives us 0
+ 1728 × 30 what gives us 51840
+ 1728 × 200 producing 345600
+ 1728 × 7000 that equals 12096000

= 12493440
