how do you solve this using 2019 tax principles

QUESTION Mary Koko, is single mother (separated from her husband) with custody of four children, ages 20 (Cory), 14 (Anne), 10 (Belinda), and 7 (Cheryl). The custody was granted to her as a part of an agreement that was worked out with the Family Court. The oldest child, Cory, is 20 years old is mentally infirmed and had no income in 2019. Additional information for 2019: 1. Employment income Gross salary S100.000 Income Tax withheld $25,000 Canada Pension Plan 2,594 RRSP Contribution 1.100 Employment insurance Premium 858 RPP Contribution (defined benefit plan) 4,000 (535,552) Net salary S66,448 2. Anne, 14 years old, attends high school. Mary paid $750 for Anne's English tutoring. 3. The following additional disbursement were made by Mary in 2019: Donation to federal Political Party $600 Legal fees for representation in Family Court 2,600 Care for children Food & clothing $6,500 Baby sitter for half days during 30 weeks 3.300 of school termSI10 per week) Overnight summer camp for 14 year old 1.000 Registered Education Savings Plan 1.200 Medical Expenses Anne 2,040 Medical expenses Belinda 4,350 United Way 500 Support payments for the husband by virtue of 8,400 Agreement REQUIRED Showing all calculations, calculate Mary Koko's Net income for tax purposes and taxable income for 2019 [1 Net income for tax purposes and taxable income for 2019