Table:
bag of birdseed	$1.23

jar of fish food	$3.00

cat toy	$1.15

bag of dog food	$5.91

For the table shown in this image, can you tell me the row and column numbers of this table? Format your final answer as a JSON, using the structure {"row_number": "m", "column_number": "n"}.

This table has 4 rows and 2 columns. Thus, the final answer is {"row_number": "4", "column_number": "2"}.