If you square a number and divide it into two parts, you get the same number again. No matter how big the number is, its double answer, when divided by two parts and added, gives the number.
77772 = 60481729
6048 +
1729 = 7777
8888 88882 = 7901234 409876544
79012344 + 9876544 = 8888 8888
11111 111112 = 123456789 00987654321
1234567890 + 987654321 = 11111 11111
22232 = 4941729
494 + 1729 = 2223
1111 11122 = 123456809876544
1234568 + 9876544 = 1111 1112
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