ROUND
Returns a number rounded to the specified number of decimal places
num
Initial fractional number
decimals
Number of decimal places to round a number
The number of decimal places can be positive or negative and, at the same time, no more than 30 (or -30, in the case of a negative value). If it is negative, then the digits to the left of the decimal point of the number num become zero, and the fractional part is cut off.