The form and whole flow still has some kinks - which adds to the confusion !
In fact, as per instructions EMBEDDED on the residence calculator page (see below), if you provide Residence Calc. printout, YOU DONT EVEN NEED TO FILL 6A and 6B ! Some of the CIC forms and instructions are badly done !
What is the most important is that the date of signing the application = Date used in the Residence Calculation.
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https://eservices.cic.gc.ca/rescalc/resCalcStartNew.do?&lang=en&_ga=1.76981141.1260307862.1388431334
On the Residency calculator page, see the bolded section below in red font extracted and copy-pasted
What happens next?
The calculator will tell you if you meet the residence requirement.
•If you meet the residence requirement, you can print the calculation and attach a copy to your Application for Canadian Citizenship - Adults. If you attach a copy, you do not need to fill in sections 6(A) and 6(B) of the application. Simply check the option 'Online Residence Calculator' in question 6(H). Make sure that the date of application used in this calculation and the date of signature on the application form and on the calculation printout are the same.