No problem, we've got 3256 and 7128 to multiply
3256 × 7128 = 7128 × (3256)
+ 7128 × 6 giving us 42768
+ 7128 × 50 what gives us 356400
+ 7128 × 200 that equals 1425600
+ 7128 × 3000 that equals 21384000

= 23208768
