Bite 289. Round to next number

Write a function that accepts a number and a multiple, then rounds the number towards the next multiple.

Examples:  

Number	Multiple	Output
0	5	0
2	5	5
5	5	5
42	5	45
-6	-10	-10
-6	-10	-10

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Imagine this on a number line.  

* Number: 0 Multiple: 5  

-3	-2	-1	0	1	2	3	4	5
			0
			0

 

Since zero is a multiple of five the answer is 0.  

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* Number: 2 Multiple: 5  

-5	-4	-3	-2	-1	0	1	2	3	4	5
							2
							=>			5

 

The next multiple of five from two is 5.

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* Number: -6 Multiple: -10  

-10	-9	-8	-7	-6	-5	-4	-3	-2	-1
				-6
-10				<=

 

The next multiple of negative 10 from negative six is -10.