No problem, we've got 6900 and 2288 to multiply
6900 × 2288 = 2288 × (6900)
+ 2288 × 0 what gives us 0
+ 2288 × 00 which equals 0
+ 2288 × 900 yielding 2059200
+ 2288 × 6000 yielding 13728000

= 15787200
