What is more important is why the person is feeling ill for so long a time. Flu and viruses if there are no complication generally last 7-14 days. It would be beneficial for the person to be evaluated by a doctor for all the existing symptoms.
Two billion, two hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-six.
I would write 0.61 as sixty-one hundredths. Or sixty-one pence in British money.
Sixty-one hundredths.
.063
2074
Sixty-nine point fifty is how I would write 69.50Or Sixty-nine point five
sixty trillionths
15.069
.060
Sixty-five thousandths.
Sixty-one.
Thirty meters at sixty miles per hour would require 1.12 seconds.