Bob, a widower who is 65 years old, has correctly calculated his taxable income for 2022 as follows:

Employment income under Subdivision a $10,000

Pension income (registered pension plan) 20,000

Old Age Security and Canada Pension Plans 10,000

Dividends from Canadian-resident public corporations (grossed up) 5,520

Interest income 5,000

total $50,520

What is the maximum amount (rounded to the nearest dollar) of federal income tax credits that Bob can claim on his 2022 tax return?

please show all calculations. thanks!