calculating values in a table

hello
I have an attribute table and I would like to calculate the maximum value of each field (field1, field2 etc.) and then divide every value of this specific field, with this maximum value. For example the first value of the first field I would like to be: value1/max(field1), the second value of the first field value2/max(field1) etc. I have no problem to use python, modelbuilder or whatever you suggest me.