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What if the number i want to round is a decimal.?

```
/// <summary>
/// Rounds a number to the closest multiple of another number.
/// </summary>
/// <example>83 rounded to closest 25 would give a value of 75 (83 is closer to 75 than 100)</example>
/// <param name="num">The number to be rounded</param>
/// <param name="closest">The value you wish to round to the closest multiple of</param>
/// <returns>The rounded value</returns>
public int Round(int num, int closest) {
return (int)Math.Round(((double)num)/closest, 0) * closest;
}
```