You can say "point 56" or "fifty-six one hundredths" if you want to say .56 in word form.
Fifty-six.
Zero point five six
56% = 0.56
56 million, 703 thousand, 94.
Write 56/1 .
.56
21/56 OR 21 -- 56
56 cinquante-six
56/100
56 million = 56,000,000
cos(56)