The following information has been provided by your client, Mr$.$ Stanley LD:

$(1)$ The above capital gains do not include capital gains from qualified farm property or qualified

small business corporation shares.

$(2)$ Mr$.$ Norman had a $$21,000$ net capital loss which was realized in $2018.$

$(3)$ Mr$.$ Norman did not have a capital gain prior to $2021.$

ONLY ANSWER THIS: Explain very clearly how the below was calculated and explaining the process of carrying back capital losses in this question. Why is the amount $0$ in $2022$ and $2023?$

Net capital losses from $2018$

$2021$: $-21000$

$2022$: $0$

$2023$: $0$

Net capital losses from $2022$

$2021$: $-11250$

$2022$: $0$

$2023$: $0$