Instructions on how to make a 20 foot bread loaf? It should be 3 feet tall and 4.24 feet wide.

Making a 20-foot bread loaf that is 3 feet tall and 4.24 feet wide requires careful planning and execution. Here are the instructions:

Step 1: Gather the ingredients
- Flour: You will need a large quantity of bread flour, depending on the size of your mixing bowl and the recipe you are using.
- Water: Sufficient water to make a dough that can hold its shape but is not too dry.
- Yeast: Active dry yeast or instant yeast.
- Salt: To enhance the flavor of your bread.

Step 2: Create the bread dough
- In a large mixing bowl, combine the flour, water, yeast, and salt following your favorite bread recipe. Be sure to adjust the quantities accordingly to make a large amount of dough.

Step 3: Kneading the dough
- Empty the dough onto a clean and lightly floured surface. Begin kneading the dough by folding it in half towards you, pushing it away with the heels of your hands, and rotating it 90 degrees. Repeat this process for about 10-15 minutes until the dough becomes smooth and elastic.

Step 4: Give the dough time to rise
- Lightly grease a large bowl and place the dough in it. Cover the bowl with a clean kitchen towel or plastic wrap. Let the dough rise in a warm place until it has doubled in size. This process usually takes around 1-2 hours, but it can vary.

Step 5: Divide the dough
- Once the dough has properly risen, you need to divide it into portions. To achieve a 20-foot bread loaf, you'll have to divide it into smaller parts that you can bake separately. To calculate the number of portions, divide the total length (20 ft) by your desired width (4.24 ft) to determine the number of loaves you can make. For example, if you want six equal portions, each loaf would be roughly 3.33 ft long.

Step 6: Shape the portions
- Take one portion of dough and flatten it into a rectangular shape on a clean surface. Fold the dough into thirds to create a log shape, then fold the edges underneath to seal. Repeat this process for each portion.

Step 7: Second rising
- Place the shaped portions onto greased baking sheets, leaving some space between each loaf. Cover the loaves with a clean kitchen towel or plastic wrap and allow them to rise for the second time until they double in size. This usually takes around 1-2 hours.

Step 8: Preheat the oven and bake
- Preheat your oven to the recommended temperature mentioned in your bread recipe. Once the loaves have risen, bake them according to the instructions on the recipe, typically around 20-30 minutes. Remember to rotate the baking sheets halfway through for even baking.

Step 9: Cool and enjoy
- Once the loaves are ready, remove them from the oven and place them on wire racks to cool completely before slicing and enjoying your delicious homemade bread.

Note: Making a 20-foot loaf of bread requires specialized baking equipment and ovens, so it may not be feasible for most home kitchens. It would be best to consult with a professional bakery for assistance or to scale down the size for a more manageable loaf.