### ROUNDDOWN(number, num_digits)

Returns the number rounded down to the nearest integer.

 number The number you want to round down (towards zero). num_digits The number of digits you want to round the number down to.

#### Remarks

 * This function is identical to the ROUND function, except that it always rounds a number down.* If "num_digits" > 0, then "number" is rounded down to the specified number of decimal places.* If "num_digits" = 0 then "number is rounded down to the nearest integer.* If "num_digits" < 0, then "number" is rounded down to the left of the decimal point.* You can use the ROUNDUP function to round up to the nearest integer.* For the Microsoft documentation refer to support.office.com

 A 1 =ROUNDDOWN(123.456,-4) = 0 2 =ROUNDDOWN(123.456,-3) = 0 3 =ROUNDDOWN(123.456,-2) = 100 4 =ROUNDDOWN(123.456,-1) = 120 5 =ROUNDDOWN(123.456,0) = 123 6 =ROUNDDOWN(123.456,1) = 123 7 =ROUNDDOWN(123.456,2) = 123 8 =ROUNDDOWN(123.456,3) = 123 9 =ROUNDDOWN(123.456,4) = 123 10 =ROUNDDOWN(56.78,-4) = 0 11 =ROUNDDOWN(56.78,-3) = 0 12 =ROUNDDOWN(56.78,-2) = 0 13 =ROUNDDOWN(56.78,-1) = 50 14 =ROUNDDOWN(56.78,0) = 56 15 =ROUNDDOWN(56.78,1) = 57 16 =ROUNDDOWN(56.78,2) = 57 17 =ROUNDDOWN(56.78,3) = 57 18 =ROUNDDOWN(56.78,4) = 57