Use of poor language on CFAI mock?

I came across this statement on morning session of CFAI Mock:-

“Installment loan payable, due in three equal annual payments on June 30 =600” What I understood from this statement? on June 30, 600 is payable. If there was a comma between payments and on, I would have thought it to be 200. Am I wrong? or is this a demonstration of use of poor language?

Note: Pardon me if this is against Ethics listed by CFAI. Is it unethical to publicly point out errors of CFAI, in the process tarnishing its image?