I need to know how can I calculate Canadian pension benefit . I badly need this answer

actually i want to know how can i Calculate" CPP contribution,CPP deduction and canada pension plan benefit.

a) Turned 18 in Alberta in Aug Turned 70 in Alberta in Feb Collecting Cpp retirement benefits at age of 60 in Alberta in May Collecting CPP disability Benefits in Oct Collecting Cpp retirement Benefits at age 67 in Oct (No election on file) Collecting Cpp retirement at 65 in April (with election on file) e) a) Turned 18 in Alberta in Aug Turned 70 in Alberta in Feb Collecting Cpp retirement benefits at age of 60 in Alberta in May Collecting CPP disability Benefits in Oct Collecting Cpp retirement Benefits at age 67 in Oct (No election on file) Collecting Cpp retirement at 65 in April (with election on file) e)