No problem, we've got 6446 and 4906 to multiply
6446 × 4906 = 4906 × (6446)
+ 4906 × 6 which equals 29436
+ 4906 × 40 what gives us 196240
+ 4906 × 400 that is equal 1962400
+ 4906 × 6000 which equals 29436000

= 31624076
