213-212

Any clues or hints to what it is? I googled 213-212 and came up with L.A. which is no help.

Spoiler:

The 213 is on the top, the 212 on the bottom inside a box that looks like a square root symbol.
The 16 starts in column 7.
The bottom row ... 4, 8-12, 14, 16-20.
Hope that helps :)

Thank you Sparrow. It did help.

Thank-you for the hints. Not at all logical.

Thank you Sparrow.

Thanks for the help.

>96 solutions.