help me with question 1 and 8

The Actual demand for Snow boards from a large GTA retail chain is shown below for 2022. Calculate the Seasonal Index (factor) for last year for each of the four seasons. Use the seasonal Index (factor) to calculate the demand for each of the seasons for 2023 (Table \#2) based on a new ANNUAL demand of 20,000 snowboards. (8 points) NOTE: You will fill in the only the cells in grey. Use formulas for each calculation otherwise you will NOT be graded on those answers. Error and Mean Absolute Percent Error. Use the ABS formula for Absolute Value. (8 points) NOTE: You will fill in the only the cells in grey. Use formulas for each calculation otherwise you will NOT be graded on those answers. The Actual demand for Snow boards from a large GTA retail chain is shown below for 2022. Calculate the Seasonal Index (factor) for last year for each of the four seasons. Use the seasonal Index (factor) to calculate the demand for each of the seasons for 2023 (Table \#2) based on a new ANNUAL demand of 20,000 snowboards. (8 points) NOTE: You will fill in the only the cells in grey. Use formulas for each calculation otherwise you will NOT be graded on those answers. Error and Mean Absolute Percent Error. Use the ABS formula for Absolute Value. (8 points) NOTE: You will fill in the only the cells in grey. Use formulas for each calculation otherwise you will NOT be graded on those answers