Step 1. Be hungry.
Step 2. Acquire food.
Step 3. Eat food.
Step 4. (Optional) Have a drink too, you deserve it, champ.
Now you're no longer hungry, and world hunger has gone down by just enough that you can call yourself a hero, great work Humanity.
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Yep let's beat hunger by locking it in a room and wait for it to die of dehydration