The Surprising Number 37

The number 37 has a special magic to it.
If you mutiplay 37x3, you get 111.
If you multiply 37x6, you get 222.
If you multiply 37x9, you get 333.
If you multiply 37x12, you get 444.
If you multiply 37x15, you get 555.
If you multiply 37x18, you get 666.
If you multiply 37x21, you get 777.
If you multiply 37x24, you get 888.
If you multiply 37x27, you get 999.

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