In one sentence, describe what the following article is about: The number of times you drain and rinse it is up to you, but draining and rinsing it at least once is recommended. Use a can opener to open the can, but don't remove the lid. Holding the lid in place, flip the can over and hold it over the sink until all the liquid has drained. Remove the top of the can, and be careful not to cut yourself. Take the tuna out of the can and place it in a strainer or colander. Rinse the tuna thoroughly with water, then press the water out using a clean hand or a paper towel. In a medium bowl, mix together tuna, eggs, celery, and mayonnaise. Stir to combine. Be sure to mix thoroughly so that all of the ingredients are evenly distributed. Add salt and pepper to taste. Divide the mixture evenly between two slices of bread, then top each with the remaining slices of bread to make two sandwiches. For a crunchy, warm variation, toast the slices of bread before assembling the sandwiches. You can also substitute a roll or a croissant in place of the sandwich bread for taste and texture variation. Or you can avoid bread altogether and use the tuna mix over a salad for a lower-carb choice.
Summary: Drain and rinse the tuna. Combine the ingredients. Assemble the sandwiches.

Incognito mode keeps the websites you visit from placing cookies on your computer. If a website notices that you've searched for the same flight multiple times, it will often automatically raise the ticket prices. If you browse in Chrome or Safari, press Control + Shift + N to open incognito mode. If you use Firefox or Internet Explorer, press Control + Shift + P. Putting your browser in Incognito mode is especially important if you search on different days of the week. Otherwise, old prices will sometimes display in lieu of new ones, and you may miss out on the best price. If you'd rather not use your browser's Incognito mode when looking for tickets, delete your cookies after each visit to a travel site. Aggregator sites are a great tool to use if you'd like to shop around and compare multiple airlines against one another. Type in your departure and arrival airports and days of travel, and scroll through the different flight combinations until you find the cheapest. Many aggregate sites also have a low-fare calendar so you can see which are the cheapest days to travel in a 30-day period. If you don't mind putting in a little more work, visit the cheapest airline's website after you've compared it with others on an aggregator site. Some airlines will offer special deals and discounts if you buy tickets directly from the site. Popular flight aggregator sites include Priceline, Travelocity, and Expedia. Budget airlines can afford to mark down their tickets because they don't offer in-flight conveniences like Wi-Fi, complimentary snacks, and reclining seats. Flying on these airlines can sometimes cost less than half as much as a flight on a more luxurious provider. If you're flying with the U.S., Hawaii, and the Caribbean, check out airlines like Frontier, JetBlue, Southwest, and Spirit. Or, if you're flying in Europe, try booking through Norwegian Air.
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One-sentence summary -- Search for cheap airline tickets using your browser's incognito mode. Compare different airlines' ticket prices with aggregator websites. Fly on a budget airline if you don't mind flights without amenities.

Problem: Article: To highlight multiple cells, click the top left-most cell of the data, then drag your cursor down and to the right until all cells are highlighted. A menu will appear. The name of this option varies by version. It's either on the top or side of the window that popped up. It's on the side of the window. Click the down-arrow next to the "Decimal places" menu to display the list of numbers, then click the one you want to select. Example: To round 16.47334 to 1 decimal place, select 1 from the menu. This would cause the value to be rounded to 16.5. Example: To round the number 846.19 to a whole number, select 0 from the menu. This would cause the value to be rounded to 846. It's at the bottom of the window. The selected cells are now rounded to the selected decimal place. To apply this setting to all values on the sheet (including those you add in the future), click anywhere on the sheet to remove the highlighting, and then click the Home tab at the top of Excel, click the drop-down menu on the "Number" panel, then select More Number Formats. Set the desired "Decimal places" value, then click OK to make it the default for the file. In some versions of Excel, you'll have to click the Format menu, then Cells, followed by the Number tab to find the "Decimal places" menu.
Summary:
Enter your data series into your Excel spreadsheet. Highlight any cell(s) you want rounded. Right-click any highlighted cell. Click Number Format or Format Cells. Click the Number tab. Click Number from the category list. Select the number of decimal places you want to round to. Click OK.