The Excel CEILING function is categorized under Math and Trigonometry functions. The function will return a number that is rounded up to a supplied number that is away from zero to the nearest multiple of a given number. Therefore, the output of the given MS-Excel formula=CEILING(number, significance)= CEILING(18, 7) is 21Additional InformationThe function uses the following arguments: Number (required argument) €“ This is the value that we wish to round off. Significance (required argument) €“ This is the multiple that we wish to round up to. It would use the same arithmetic sign (positive or negative) as per the provided number argument.