<\body> <\explain> >|expr-n> >|expr-n> <|explain> Add or subtract numbers or lengths. For instance, > yields and > produces . In the case of subtractions, the last argument is subtracted from the sum of the preceding arguments. For instance, > produces and > yields . <\explain> >|expr-n> <|explain> Multiply two numbers until . One of the arguments is also allowed to be a length, in which case a length is returned. For instance, > evaluates to and > to . <\explain> >|expr-n> <|explain> Divide the product of all but the last argument by the last argument. For instance, > evaluates to , > to , and > to . <\explain> <|explain> Compute the result of the division of an integer by an integer , or its remainder. For instance, >= and >=. <\explain> <|explain> Return the result of the comparison between two numbers or lengths. For instance, > yields and > yields .