24 lines
594 B
Markdown
24 lines
594 B
Markdown
--- Part Two ---
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Your calculation isn't quite right. It looks like some of the digits are
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actually spelled out with letters: one, two, three, four, five, six, seven,
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eight, and nine also count as valid "digits".
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Equipped with this new information, you now need to find the real first and last
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digit on each line. For example:
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```
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two1nine
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eightwothree
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abcone2threexyz
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xtwone3four
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4nineeightseven2
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zoneight234
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7pqrstsixteen
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```
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In this example, the calibration values are 29, 83, 13, 24, 42, 14, and 76.
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Adding these together produces 281.
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What is the sum of all of the calibration values?
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