Incidence based cross tab

Hi, I am new to Qualtrics. I have created some test project and playing with those for analysis. Today I have created a project where asking 3 questions only. First Q1 Is there any children age below 18 in house hold. Second Q2 How many children age below 18 if coded Yes in Q1. Third Q3 shows a grid to capture age of number of children mentioned in Q2. Now I would like to give a table where the base would be number of children in top break (NOT the number of respondent). Side break is age of children. Please have a look into the data as attached I have captured for 4 respondents so the base (Total) would be 9 (NOT 3 or 4). In side break the count for Age 1 -> 1 Age 2-> 1 Age 4-> 1 Age 6-> 2 Age 8-> 1 and so on. Can you please help me to know how can I do it in Cross tab or something else. How can I show the percentage also based on total number of children which is 9 here. Thanking you, Regards, Arun