I don’t understand how your figures relate to each other in the example
you
gave, but here are a few ways to format a float to one decimal place:
val = 0.4423
printf “%6.1f mcg\n”, val
str = sprintf("%6.1f mcg", val)
puts str
str = “%6.1f mcg” % val
puts str
For more info: ri Kernel#sprintf, ri String#%