Answer
Two hundred and thirty-three point zero five six.
Work Step by Step
To write the given decimal number in words, we begin with the whole numbers. In this case, it is 233 $=$ Two hundred thirty-three.
Then comes the decimal point. While reading or writing we say or write the '$.$' as 'point' instead of 'decimal point'.
After the decimal point, the digit's names are written separately (ie, zero five six NOT fifty-six)
0 $=$ Zero
5 $=$ Five
6 $=$ Six
So the answer is Two hundred and thirty-three point zero five six.
