141 89/90-84

It seems like you have given a numerical range for two different values, 89/90 and 84. However, I'm not sure what exactly you would like assistance with.

If you are looking for the average of these two values, you can add them together and divide by 2. That would be:

(89/90 + 84) / 2

If you were looking for something else or need further assistance, please provide more information.