18 lines
564 B
Markdown
18 lines
564 B
Markdown
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# Day 1 - Part 2
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Your calculation isn't quite right. It looks like some of the digits are actually **spelled out with letters**: one, two, three, four, five, six, seven, 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 digit on each line. For example:
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```txt
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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`. Adding these together produces 281.
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