'Hello, world!'
'I am now calculating something irrelevant, but interesting.'
daysPerYear = 365
hoursPerDay = 24
minutesPerHour = 60
secondsPerMinute = 60
secondsPerYear = daysPerYear * hoursPerDay * minutesPerHour * secondsPerMinute
'The percent error of pi x 10 million seconds from 1 year is '
100 * (pi * 1e7 - secondsPerYear) / secondsPerYear
'I am done.'

===============================================================================
sample session:
===============================================================================

>> 'Hello, world!'

ans =

Hello, world!

>> 'I am now calculating something irrelevant, but interesting.'

ans =

I am now calculating something irrelevant, but interesting.

>> daysPerYear = 365

daysPerYear =

   365

>> hoursPerDay = 24

hoursPerDay =

    24

>> minutesPerHour = 60

minutesPerHour =

    60

>> secondsPerMinute = 60

secondsPerMinute =

    60

>> secondsPerYear = daysPerYear * hoursPerDay * minutesPerHour * secondsPerMinute

secondsPerYear =

    31536000

>> 'The percent error of pi x 10 million seconds from 1 year is '

ans =

The percent error of pi x 10 million seconds from 1 year is 

>> 100 * (pi * 1e7 - secondsPerYear) / secondsPerYear

ans =

   -0.3808

>> 'I am done.'

ans =

I am done.