You can
put this solution on YOUR website! I'm going to use "->" in place of the horseshoe symbol.
I'm going to use "&" in place of the dot
1. N -> (D & W)
2. D -> K
3. N / N & K
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4. D & W 1,3 Modus Ponens
5. D 4 Simplification
6. K 2,5 Modus Ponens
7. N & K 3,6 Conjunction