In javascript, when I calculate 0.15*6, I get 0.89999999 instead of 0.9

I understand that this is due to the floating point arithmetic. But how can I avoid such problem and get correct result?

To add the relevance of this question, I will add my use case here.

I am provided with a min, max and step value all can be integer or floating point numbers. The input range min - max is not necessarily in multiple of the step value.

If the range is not a multiple of step, my task is to extend the range by adjusting (increasing) max value.

Example: min = 0, max = 0.85, step = 0.15

Here the range = 0.85 - 0 = 0.85, and this is not multiple of step value 0.15. So I have to extend the max value.

I am using the below formula to get adjusted max value:

max = Math.ceil((max - min) / step) * step + min;

I expect this to give

>> max = Math.ceil((0.85 - 0) / 0.15) * 0.15 + 0
>> max = Math.ceil(5.666666667) * 0.15
>> max = 6 * 0.15

>> max = 0.9 // <--- But, I get 0.8999999999999999 here

Please note that the number of decimal places are not known, therefore rounding is (probably) not an option.