Lignum Co - Dec 12 Q2

Good afternoon John, I was wondering if you could help with calculation of the forward rate for case one in Q2/Dec 2012 Lignum Co. The rate is determined as as ZP base rate of 8.5% plus 25 basis point and EUR base rate 2.2% less 30 basis points. Spot is ZP/EUR 142. Particularly, I am not sure why both base rates are divided by 3 (e.g. 1+(0.085+0.0025)/3), which is on the answer. In the answer is it is calculated as 142x(1+(0.085+0.0025)/3)/(1+(0.022-0.0030)/3)...this confuses me. Thank you.