i keep getting 87.25 and trying to round up to 88, then to 87 and then trying 1 or 0 (.8725) maybe I am doing this wrong but I can not get it and you must round to the nearest whole number

The standard deviation of the market-Index portfolio is 50%. Stock A has a beta of 1.60 and a residual standard deviation of 25% a. Calculate the total variance for an increase of 0.20 in its beta. (Do not round Intermediate calculations. Round your answer to the nearest whole number.) Answer is complete but not entirely correct. 87 Total variance b. Calculate the total variance for an increase of 23.22% in its residual standard deviation (Do not round Intermediate calculations. Round your answer to the nearest whole number.) Answer is complete but not entirely correct. 87 Total variance