X = 3 and y = 3. This can also be written as (3,3).
Any number greater than 700,000 with ten-thousands digit 1 through 4 will round down to 700,000. For example, 748,235 will round to 700,000.
[[x]] means that the integer should be rounded down to the greatest integer that is of the same value as x or is lower than x.
