If you are trying to multiply them together:
22.6498
538.
538.
The least positive multiple is 538.
The positive integer factors of 421 are: 1, 421
The only prime factor of 421 is 421.
0.421 as a fraction is 421/1000.It is 421/1000.
11/538 as a percentage = 100*11/538 = 2.045, approx.
538 cm=
538 + 259 = 797
1, 2, 269, 538.
It is: 538+76667 = 77205
421 = CDXXI