Part of the point of reCAPTCHA is to crowdsource the digitisation of printed content that conventional OCR couldn't manage. This is why you occasionally end up

Part of the point of reCAPTCHA is to crowdsource the digitisation of printed content that conventional OCR couldn't manage. This is why you occasionally end up with strange things like fractions and foreign characters, that you don't know how to input. Use the refresh if you can't read it.