Round to Any Number
Rounds a value on the base of an arbitrary number. Rounding is usually to a decimal place, rounding to one decimal place in the decimal system corresponds to rounding to 0.1, to three decimal places corresponds to rounding to 0.001. However, you can also enter any values that do not have to be decimal as the basis for the rounding; the value that is closest to an integer multiple of the rounding basis will be shown. The source code for rounding is round(a/b)*b, for rounding down floor(a/b)*b and for rounding up ceil(a/b)*b.
Example: 15 rounded to 0.7 is 14.7, rounded up it is 15.4.