Walter worked for ABS Inc. from April 1 st to December 31st during 2023. He earned a monthly base salary of $5,000, plus 1% commission on all of his sales. During 2023 , Walter's sales totaled $850,000. Walter was required by his employer to pay for his employment expenses. He traveled out of his city most days in order to sell to customers in surrounding towns. He received a monthly allowance of $500 to cover his traveling costs (which has been accurately recognized as 'unreasonable'). Walter and his employer each contributed $3,000 to the company's registered pension plan in 2023. Walter provided you with the following receipts for 2023: Walter purchased a new vehicle to use for his employment at ABS Inc. 12,000 of the 25,000 kms driven in 2023 were for business purposes. The vehicle cost Walter $40,000 plus HST of 13%. Work-related interest payments on the car loan totaled $200 per month. Required: Calculate Walter's employment income for 2023 in accordance with Section 3 of the Income Tax Act. You must provide a brief explanation for any amounts you have purposely excluded from the calculation. Note: You are required to show your work in order to earn full marks but you are not required to reference legislation in Income Tax Act