Shreya saves money in this pattern. ₹2 on the first day of the month, ₹4 on the second day, ₹6 on the third day and so on. She takes out ₹1 from her savings on the second day, fourth day, sixth day and so on and keeps helping needy children. Represent all the integers mentioned here on the number line. What will be her saving after a week? How much money has she kept for helping the needy after a week.