Answer:
Explanation:
My statement/reply will be given based on the answer-example here, which is "5,7". If it were a five-digit number like 57000, it would be easy and appropriate to place a comma after 7. So, assuming the answer is two digits and the instruction in the question is "Type your answer using a comma", you should obey instructions and type that answer with a comma separating the the two figures!
Most times in examinations or assessments, instructions are given, to award marks to attentive or careful students. Obey this instruction (the one in this question) after you've gotten the right answer to your mathematical problem. If it is two digits, separate them with a comma. If after you submit the assignment or form you're marked wrong; draw the attention of the examiner to the instruction that was given in the question.