** In Microsoft Excel, the SUBSTITUTE function is a text function that allows you to replace occurrences of a specific substring within a text string with another substring. Its syntax is as follows:
SUBSTITUTE(text, old_text, new_text, [instance_num])
Text: This is the text string in which you want to replace occurrences of old_text with new_text.
Old_text: This is the substring you want to find and replace within the text string.
New_text: This is the substring that will replace each occurrence of old_text in the text string.
[instance_num] (optional): This argument specifies which occurrence of old_text you want to replace. If you omit it, Excel replaces all occurrences of old_text in the text string. If you specify a number, Excel will only replace that particular occurrence. If you use a negative number, Excel starts counting from the end of the text string.
Here's an example of how to use the SUBSTITUTE function in Excel:
Let's say you have the following text in cell A1:
"The quick brown fox jumps over the lazy brown dog. The brown dog is very brown."
You want to replace all occurrences of "brown" with "red." You can use the SUBSTITUTE function like this in another cell:
=SUBSTITUTE(A1, "brown", "red")
The result in that cell would be:
"The quick red fox jumps over the lazy red dog. The red dog is very red."
As you can see, the SUBSTITUTE function replaced all occurrences of "brown" with "red" in the original text.
The SUBSTITUTE function is handy for various tasks, such as cleaning and formatting text data in Excel worksheets. **
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