CONTENTS: Two number factories and half-baked ideas for a third number factory.

The Digit Factory: Use the numbers 1, 2, 3, 4, and 5, the operations addition, subtraction, multiplication, and division, and parentheses to manufacture expressions whose values are decimal digits.

The Million Factory: Use decimal digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, the operations addition, subtraction, multiplication, division, and exponentiation, and parentheses to manufacture expressions whose value is 1,000,000 (one million)

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