Count structure values

Right now i count my structure (named "answer") values by:

<cfset answers_sum = answer.response.sum1 + answer.response.sum2 + answer.response.sum3 + answer.response.sum4 + answer.response.sum5 + answer.response.sum6 />

Of course that is not the way to do so as i want it in a loop count to always (despite amount of answer fields in the db) be able to correctly calculate the total.

So it must be in a loop like <cfloop index="i" from="1" to="#application.dbquestions#"> but how do i calculate the total?

Thanks