$\backslash$table$[[$Item$,$ RM $($million$)],[$Profit$,403],[$Dividends$,152],[$Interest rate, $209],[$Wages$,405],[$Salaries$,224],[$ Depreciation, $108],[$Government expenditure, $1008],[$Consumption$,2501],[$Import$,201],[$Net factor income,$254],[$Indirect tax, $105],[$Subsidies$,578]]$ The table above shows the transaction in Pinkland last year: a$)$ Calculate Pinkland's GDP$.$ b$)$ What was the value of national income equal to $?$ c$)$ What approach did you use to make this calculation?