I've been following this book called "LEARN PYTHON THE HARD WAY", but it seemed to use the python2, so when I practiced, the code on the book said like this 'print "Hens", 25+30/6', and it should turn out to be like this 'Hens 30'. But I couldn't do that on python3, or at least I don't know how, I know how to print Hens-- print('Hens'), but have no idea how to do the math.