Convert string to float with precision in ruby

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I have a newbie question to ask, when I convert string to float how do I put a dot two houses before the end? This is a example of what I want to do.

"000001909".to_f  = 19.09

But only get this:

"000001909".to_f  = 1909.0

asked 33 secs ago

LucasMelo

25

Convert string to float with precision in ruby