No problem, we've got 3535 and 6645 to multiply
3535 × 6645 = 6645 × (3535)
+ 6645 × 5 what gives us 33225
+ 6645 × 30 yielding 199350
+ 6645 × 500 which equals 3322500
+ 6645 × 3000 that is equal 19935000

= 23490075
