I'm working on a tool to load scientific data from FITS file (a file format used mainly for astronomical images, they have sections that can be used to store metadata like a star position, magnitude, ...

So, the number \(5.743\) is said to have 3 decimal places. The number \(5.1492\) has four decimal places, while \(4.34\) has two decimal places. To round a number to a given number of decimal places, ...