Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| President | Date of inauguration | Age at inauguration | End of term | Length of retirement | Lifespan |
| --- | --- | --- | --- | --- | --- |
| Enrico De Nicola Category:Articles with hCards | 1January1948 | 70years, 53days | 12May1948 | days | days (81years, 326days) |
| Luigi Einaudi Category:Articles with hCards | 12May1948 | 74years, 49days | 11May1955 | days | days (87years, 220days) |
| Giovanni Gronchi Category:Articles with hCards | 11May1955 | 67years, 243days | 11May1962 | days | days (91years, 37days) |
| Antonio Segni Category:Articles with hCards | 11May1962 | 71years, 98days | 6December1964 | days | days (81years, 303days) |
| Giuseppe Saragat Category:Articles with hCards | 29December1964 | 66years, 101days | 29December1971 | days | days (89years, 266days) |
| Giovanni Leone Category:Articles with hCards | 29December1971 | 63years, 56days | 15June1978 | days | days (93years, 6days) |
| Sandro Pertini Category:Articles with hCards | 9July1978 | 81years, 287days | 29June1985 | days | days (93years, 152days) |
| Francesco Cossiga Category:Articles with hCards | 3July1985 | 56years, 342days | 28April1992 | days | days (82years, 22days) |
| Oscar Luigi Scalfaro Category:Articles with hCards | 28May1992 | 73years, 262days | 15May1999 | days | days (93years, 142days) |
| Carlo Azeglio Ciampi Category:Articles with hCards | 18May1999 | 78years, 160days | 15May2006 | days | days (93years, 54days) |
| Giorgio Napolitano Category:Articles with hCards | 15May2006 | 80years, 320days | Incumbent | 0,000 Incumbent | days (88years, 217days) |
| President | Date of inauguration | Age at inauguration | End of term | Length of retirement | Lifespan |
Question:
What is the Length of retirement of the President with an Age at inauguration of 70years, 53days?
Answer:
days