Table:
x	y

7	20

8	10

9	0

Inspect the provided table and determine the locations of cells that have the following values.
Express the cell positions as JSON {'value': '<cell value>', 'location': (row number, column number)}, with row and column number beginning from 1. Represent the location as 'DOES NOT EXIST' if a cell is not present in the table.
1. '20';
2. 'y';

The target cell locations are as follows:
1. {'value': '20', 'location': (2, 2)}
2. {'value': 'y', 'location': (1, 2)}