Regex Editor & Tester

This regular expression matches decimal numbers starting with '0.' that specifically fall at or above 0.857. It validates patterns like 0.9, numbers between 0.86 and 0.89, and numbers between 0.857 and 0.859, optionally followed by more digits. It is ideal for filtering numerical values, although the title's reference to 0.056 is likely a typo for 0.856.