Round Numbers to Nearest Multiple of 5

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To round a number to the nearest multiple of 5, one can use a simple formula: round up any number that is not already a multiple of 5. For example, 22 rounds up to 25, while 20 remains 20. Additionally, there is a request for information on calculating the floor function, which is relevant for rounding down to the nearest integer. The discussion emphasizes the importance of showing attempts in a homework context. Clear methods for rounding and understanding floor functions are sought for educational purposes.
powp
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Hello

I need to create a one line statement to round number up to nearest multiple of 5

so if I have a number 22 the result should be 25
so if I have a number 20 the result should be 20

or does anybody know how to calculate floor function?

Thanks
 
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This should be in the homework section, and you should show your attempts first.
 

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